What percentage of the entire reef did the scientist sample

Answers

Answer 1

Answer:

As a result, over 50 percent of the world's coral reefs have died in the last 30 years and up to 90 percent may die within the next century—very few pristine coral reefs still exist.

Explanation:

Answer 2

As a result, over 50 percent of the world's coral reefs have died in the last 30 years and up to 90 percent may die within the next century—very few pristine coral reefs still exist.

What are coral reefs?

A coral reef is an underwater ecosystem characterized by reef-building corals. Reefs are formed of colonies of coral polyps held together by calcium carbonate. Most coral reefs are built from stony corals, whose polyps cluster in groups.

Coral reefs are massive structures made of limestone deposited by coral polyps. Often referred to as the “rainforests of the sea,” coral reefs support approximately 25 percent of all known marine species.

Coral reefs protect coastlines from storms and erosion, provide jobs for local communities, and offer opportunities for recreation. They are also are a source of food and new medicines. Over half a billion people depend on reefs for food, income, and protection.

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Related Questions

true or false? the endosperm in a seed develops into the embryo.

Answers

Answer:

the answer if false

Explanation:

the endosperm in a supply for the embryo

How does pH affect plant growth?

Answers

Answer:

Soil pH directly affects the life and growth of plants because it affects the availability of all plant nutrients. Between pH 6.0 and 6.5, most plant nutrients are in their most available state. A nutrient must be soluble and remain soluble long enough to successfully travel through the soil solution into the roots.

true or false? to make a person breathe in, the volume of the chest cavity must decrease, creating a higher pressure in the thorax

Answers

The thorax is a very vital and important organ in the human body.

It is a structure that serves as a protective covering for organs in the body such as the lungs, the heart, some vital blood vessels e.t.c

It is false that to make a person breathe in, the volume of the chest cavity must decrease, creating a higher pressure in the thorax.

When a person breathes in,  the chest cavity expands (the volume increases) and the pressure in the thorax decreases.

When a person breathes out, the chest cavity decreases in size, and the pressure in the thorax increases.

Therefore, we can see that the process of breathing in humans, follows the principle of Boyle's Law.

Boyle's law states that as the volume increases there is a decrease in pressure and as the volume decrease there is an increase in pressure.

Therefore, It is false that to make a person breathe in, the volume of the chest cavity must decrease, creating a higher pressure in the thorax.

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What are laticifers?​

Answers

Answer:

In short words, Laticifers is a cell, tissue, or vessel that contains or conducts latex.

Explanation:

A laticifer are a type of elongated secretory cell found in the leaves and/or stems of plants that produce latex and rubber as secondary metabolites.

Answer:

A laticifer is a type of elongated secretory cell found in the leaves and/or stems of plants that produce latex and rubber as secondary metabolites.

What are some environment benefits of having a carnivore diet?

Answers

Answer:

Since carnivore diet contains all-meat that is primarily made of fat and protein, they are absorbed to a great extent in the gastrointestinal tract, leaving very little residue. This helps in alleviating issues like bloating, diarrhea, gas and other gastric problems. Cons of Carnivore Diet It lacks significant nutrients

Explanation:

Answer:

Meat consumption is responsible for releasing greenhouse gases such as methane, CO2, and nitrous oxide. These gases contribute to climate change, such as global warming. Livestock farming contributes to these greenhouse gases in several ways: The destruction of forest ecosystems.The carnivore diet boasts weight loss, improved mood, as well as blood sugar regulation. It was founded on the belief that high-carb diets are the cause of chronic disease. However, there are drawbacks to eating nothing but animal protein and zero carbs.

Explanation:

Hope this helps.

what are the malleable and ductile properties of metal

Answers

Answer: The malleable properties are properties that affect its ability to be harmed, pressed, or rolled into thin sheets without breaking. It is the property of a metal to deform under compression and take on a new shape. The ductile properties is the ablity to be hammered thin or stretched into wire without breaking.

Explanation: Found on Thoughtco.com

Clear-winged dragonflies live longer and can reproduce
many more times than yellow-winged dragonflies.
How is this population of dragonflies most likely to change as a result of this
difference?
O A. Dragonflies with yellow wings will evolve into ones with clear
wings
O B. Clear-winged dragonflies will become more common over time.
O C. The number of dragonflies will shrink until they become extinct.
O D. Yellow-winged dragonflies will become more common over time.

Answers

B. Clear-winged butterflies dragonflies will become more common over time.

which superficial flexor muscle of the forearm is the most lateral?

Answers

Answer:

pronator teres

Explanation:

Which is NOT an example of proper gym etiquette?


options:


A.
Wipe down machines after use.

B.

Demonstrate proper body mechanics.

C.

Use equipment quickly if people are waiting.

D.

Limit time on the treadmill during busy times.



no links

Answers

B because all of the other options are about how you should use the equipment properly or letting other people use them too.

Using equipment quickly when people are waiting is actually an example of poor gym etiquette. Therefore option C is correct.

Sharing the equipment and being mindful of other gym patrons are key. When others are waiting and equipment is being used inappropriately, it can be detrimental to everyone's experience.

It's crucial to be aware of when the gym is busy and to give others a chance to use the equipment.

For the purpose of fostering a welcoming and inclusive environment, good gym etiquette entails showing consideration for and respect for other participants.

Therefore, The correct option is B.

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Mannitol salt agar (MSA) only allows the growth of halophiles. Among the halophiles, mannitol fermenters release acid that turns the pH indicator yellow; mannitol nonfermenters leave the medium red. Onto MSA you inoculate a halophilic mannitol fermenter, a nonhalophilic mannitol fermenter, and a halophilic mannitol nonfermenter. Thus, the medium is acting as a __________ medium.

Answers

Mannitol salt agar can act as both a selective and differentiating medium. A selective medium is one in which inhibits the growth of a particular organism, and allows others to thrive in said conditions. In this case, MSA favors halophilic organisms. MSA is also a differentiating medium because of the mannitol content. Mannitol is a sugar and mannitol fermenters, like s. saprophyticus, use mannitol and release acid as a byproduct. The pH indicator within the agar changes from red to yellow.

According to Kepler's second law of motion, which statement describes the area
swept out py a line between a planet and the sun?
It is constant if the planet moves at a constant speed.
O It increases as the planet moves away from the sun.
O It is constant for equal times.
OIt increases as the planet approaches the sun.

Answers

Answer: It is constant for equal times

Explanation: Just did the assignment

According to Kepler's second law of motion it is constant for equal times. The correct option is C.

What is  Kepler's law?

Kepler's laws of planetary motion, published between 1609 and 1619 by Johannes Kepler, characterize the orbits of planets around the Sun.

The speed of a planet in an elliptical orbit around the Sun is described by Kepler's second law of planetary motion.

It states that a line drawn among both the Sun as well as the planet shuffles equivalent regions in equal amounts of time.

As a result, the planet's speed increases as it approaches the Sun and declines as it fades away from it.

Kepler's laws of planetary motion represent a watershed moment in the transformation from geocentrism to heliocentrism.

They establish the first quantitative link among the planets, together with Earth. They also represent a time when the important questions of the day were changing.

Thus, the correct option is C.

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does the moon make it's own light? explain how the moon gives us light at night?​

Answers

Answer:

The moon does not make it's own light

Explanation:

The light from the sun reflects off of the moon, which makes it look like it is glowing. That is how the moon gives us light at night.

Una botella de vidrio tiene propiedad de dureza ?

Answers

Answer:

si

Explanation:

Se trata de un material inorgánico y duro entonces tiene propiedad de dureza porq no es elastico

what determines the primary structure of a dna molecule?

Answers

Answer:

I would go with the sequence of the bases in the nucleic acid chain

The sequence of nucleotides defines the primary structure of DNA and RNA where the nucleotides are linked to the oxygen on the 5' carbon of one through the phosphodiester bond linking to the oxygen on the 3' carbon of the other.

What is DNA?

Deoxyribonucleic acid is a polymer which is made up of two polynucleotide chains that coil around each other to carry the genetic instructions for growth, function, development, and reproduction in all known organisms and many viruses. DNA and RNA are nucleic acids.

DNA is made up of chemical building blocks called nucleotides which are building blocks made up of three parts:

1. A phosphate group

2. A sugar group

3. One of four types of nitrogenous bases i.e. adenine (A), cytosine (C), guanine (G), and thymine (T)

To form a strand of DNA, nucleotides are linked in chains, alternating between phosphate and sugar groups.

Thus, the sequence of nucleotides defines the primary structure of DNA and RNA where the nucleotides are linked to the oxygen on the 5' carbon of one through the phosphodiester bond linking to the oxygen on the 3' carbon of the other.

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Why are antibiotics unhelpful for treating the common cold?
O A. Bacteria are not killed by antibiotics.
O B. Colds are caused by antibiotics.
O c. Antibiotics cannot treat illnesses.
O D. Colds are caused by viruses.

Answers

D. colds are caused by viruses

Answer:

d cold are caused by viruses

the hypophyseal fossa of the sella turcica contains the ________ gland.

Answers

Answer:

The pituitary gland; is the answer to this question. I hope it helped.

The pancreas is the organ in the body that...

Answers

Answer:

i believe the answer is B.

Explanation:

did a little research...tell me if wrong

Which of the following might make this ecosystem more sustainable?
A. if it supported more plant species, but fewer animal species

Answers

Answer:

Something that may make this sustainable is to remove food from there, or to add more animal species, particulary slightly invasive species that can eat the plants, and fast.

Oops didn't understand at first, yes this will make it more sustainable

Explanation:

To solve this we must be knowing each and every concept related to ecosystem. Therefore,  an environment with a large variety of plant and animal species is the correct option.

What is ecosystem?

An ecosystem is generated through the interaction of all life forms with each other as well as with the chemical and physical features of their surroundings, all of which are linked by the energy flow. It includes all of the living organisms in a given region in addition to their non - living things surroundings such as air, water, and sunshine.

Humans depend on ecosystems to meet their fundamental requirements. Ecosystems sustain us by providing safe drinking water as well as nutritious food. They supply raw materials for our clothes, housing, transportation, and energy needs.  An environment with a large variety of plant and animal species is more sustainable ecosystem.

Therefore,  an environment with a large variety of plant and animal species is the correct option.

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why is the study of taxonomy important to understanding human evolution? this helps us to

Answers

Answer:

this helps us to categorize organisms so we can more easily communicate biological information.

Taxonomy is important to understanding human evolution because this discipline helps us to contextualize humans relative to other animals.

Human evolution has been subjected to extensive debate for many centuries.

Taxonomy is a discipline that helps us to classify primates in the tree of life.

Taxonomy uses ecological, morphological and molecular (DNA) features to classify organisms.

In conclusion, taxonomy is important to understanding human evolution because this discipline helps us to contextualize humans relative to other animals.

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what is the bar graph showing

Answers

Answer:

The bar graph didn't exist in your question so ask again by showing bar graph.

Question 3 point)
in the late 1980's scientists discovered a new fossil skeleton that changed their thinking about the events leading to life on land. This new fossil
had legs and feet, but ankles that were too weak to support it's weight on land. It had lungs and gills, but the rib cage was too short to prevent
the chest cavity from collapsing when the animal was on land. These structures suggested that limbs evolved before retrapods moved onto
land. What is the name of this new fossil skeleton?

Answers

Answer:Ichthyostega

Explanation: did the assignment and got it correct!

HELP ME I NEED TO KNOW THIS PLEASEEEEEE (GIVING BRAINLIEST)

Match the organs to the system with which they are most closely associated.


Question 10 options:


cranium



small intestine



kidneys



lungs



arteries





spinal cord



adrenal gland


1.

Digestive


2.

Skeletal


3.

Endocrine


4.

Nervous


5.

Muscular


6.

Cardiovascular


7.

Excretory


8.

Respiratory

Answers

Answer:

cranium: skeletal system

Small intestine: digestive system

Kidneys: excretory system

Lungs: respiratory system

Arteries: cardiovascular system

Spinal cord: nervous system

adrenal gland: endocrine system

Explanation:

Answer:

cranium=2

small intestine= 1

kidneys=7

lungs=8 (maybe 6)

arteries=6(maybe8)

spinal cord=4

adrenal gland=3

Compare sight with other senses

Answers

Answer:

A) taste and smell

Explanation:

What two fundamental parts make up a chromosome?
1. RNA and collagen proteins
2. DNA and histone proteins
3. RNA and histone proteins
4. DNA and collagen proteins

Answers

I think the answer is 2— DNA and Histone proteins.

how many parents are involved in asexual reproduction

Answers

Answer:

1

Explanation:

Only one parent is needed in asexual reproduction.

What is the chemical energy molecules used by cells

Answers

Answer:

Adenosine 5'-triphosphate, or ATP

Explanation:

Answer:Adenosine 5'-triphosphate, or ATP

Explanation:

If a runner ran 100m in 10s, what is the runners average speed?


I think it involves one of Newton’s laws.

Answers

Answer:

either 10 metera in one second or .1 m per second s

Explanation:

it ia just math so dividing

Which statement is true of a Prokaryote cell? Please Help !!!

Answers

Answer:

it is unicellular.does not have a nucleus and is missing most organelles.

if you move 50 meters in 10 seconds, what is you speed

Answers

Answer:

5 mps (meters per second)

Explanation:

Divide 50 by 10 to get 1 second.

name three ways that you can explore specific genes to see if they would make good barcodes for species identification.

Answers

The barcode gene sequences should show less intraspecific gene variation than interspecific variation, contain conserved flanking regions and have a short length.

The three most important constraints to explore the suitability of a nucleotide sequence in order to be used as a DNA barcode for taxonomic identifications are:

Barcode gene sequences show less genetic variation within species (intraspecific variation) than between species (interspecific variation).

Barcode sequences also show conserved flanking regions in order to be amplified in all species to be identified/categorized.

Barcode sequences have short lengths due to technical constraints (amplification by PCR is ideal no more than 1000 base pairs).

For example, in animals, an excellent barcode gene sequence used for taxonomic identification is the Cytochrome Oxidase I (COI) gene because this sequence can be used across the evolutionary spectrum.

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