Answer:
a
Explanation:
edge
When microscopes were first used hundreds of years ago, scientists discovered that a single drop of water contains many particles that the human eye is unable to detect on its own. This statement best describes the use of microscopes over the last several hundred years. Thus, option A is correct.
What are the theories related to microphones?
The statement that best describes the development of the theories that has been connected microscopic as well as macroscopic phenomena has took several hundred years for the scientists just to develop current theories, as well as they are still being revised to this same process.
Most of the scientific theories has been involving the microscopic and the macroscopic phenomenon which have been taken several years to be developed atlast however, this theories are still under revision till date. The microscopes used today are much more powerful and have allowed scientists to make discoveries about smaller living things.
Therefore, This statement best describes the use of microscopes over the last several hundred years. Thus, option A is correct.
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what happens when soil leaches
Answer:
In agriculture, leaching is the loss of water-soluble plant nutrients from the soil, due to rain and irrigation. ... Leaching may also refer to the practice of applying a small amount of excess irrigation where the water has a high salt content to avoid salts from building up in the soil (salinity control).
Explanation:
statements that accurately describe the structure of a cell membrane
Answer:
The cell membrane is a single layer of phosphate molecules and lipids. The cell membrane is a double layer of phosphate molecules and lipids. The cell membrane has protein channels that are partly inside and partly outside the cell. The cell membrane has protein channels that are entirely inside the cell.
Explanation:
HELP ME!!
What is cancer?
addition of new cells to replace damaged cells
DNA replication
cellular death
uncontrolled cell division
Answer: uncontrolled cell division
Explanation: uncontrolled cell division forms a cancer turmor which can kill.
A scientist finds several hundred fish fossils in the dessert. This evidence best supports which of the following scientific ideas?
14. Give an example of three adaptations in polar bears. Be sure to
state how each trait is an adaptation.
Answer:
Adaptations
Explanation:
1). "White" fur- Polar bears are well known for this adaptation, white fur. Their fur is actually clear, but gives the appearance of being white. This is so they can blend into their environment.
2). Fur and fat- They have very thick layers of fur and fat, to help keep them warm(insulate them), as their habitat is extremely cold. This prevents things like hypothermia and frostbite.
3). Large feet- Their feet are quite large, which gives them an advantage. It results in more even, spread out weight distribution, and gives them a better grip on the ice.
Here's an extra:
4). Greasy coat- Polar bears are excellent swimmers, and as a result of their swimming habits, they actually have a greasy coat. This grease is much like oils a duck or goose(or other aquatic aviary species) have. It causes water to roll off of them, meaning they're considered hydrophobic.
It is found that many insecticides - used to kill insects - lose their effectiveness after some years. What could be the cause of this?
A) The insecticides are equally effective - such myths are spread by manufacturers so that they can sell more.
B) The species targeted by the insecticide are destroyed, but new insects which are unaffected, are born.
C) The insects develop resistance to the insecticide, which is passed on to successive generations.
D)The atmosphere contains so much of the insecticide that humans start being poisoned by it.
Answer:
C) The insects develop resistance to the insecticide, which is passed on to successive generations.
Explanation:
It's called adaptation.
Answer:
normally, insecticides last for over 4 to 5 years before breaking into microbes, the species targeted are destroyed. A should be the answer
Which of the following is essential to proper functioning of all prokaryotic and eukaryotic organisms?
A.) O2
B.) CO2
C.) ATP
D.)NaCI
Answer:
I think its B. CO2
Explanation:
Oxygen is only needed for eukaryotes so not A
ATP is the product of prokaryotes
And I highly doubt its salt
ATP is essential to the proper functioning of all prokaryotic and eukaryotic organisms.
For example, biochemical reactions in mitochondria switch power from fatty acids and pyruvate molecules into a power-wealthy molecule referred to as adenosine triphosphate (ATP). Subsequently, the relaxation of the organelles uses this ATP because of the supply of the power they want to operate.
Each organelle helps one-of-a-kind sports inside. Mitochondria, for example, are organelles that offer eukaryotes a maximum in their power with the aid of using generating power-wealthy molecules referred to as ATP. Prokaryotes lack mitochondria and rather produce their ATP on their floor membrane
What is enzyme synthesis?The feature of ATP synthase is to synthesize ATP from ADP and inorganic phosphate (Pi) withinside the F1 sector. This is viable because of power derived from a gradient of protons which move the internal mitochondrial membrane from the intermembrane area into the matrix via the Fo part of the enzyme.
Hence concluded that ATP is essential to the proper functioning of all prokaryotic and eukaryotic organisms.
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Basalt is dark in colour. Give reason.
Answer:Basalt is usually dark grey to black in colour, due to a high content of augite or other pyroxene minerals, but can exhibit a wide range of shading.
Explanation:
Some basalts are quite light-coloured due to a high content of plagioclase, and these are sometimes described as leucobasalts.
Which of these units are most commonly found/used in science?
feet/inches
pounds/ounces
yards/miles
meters/grams
Answer:
Meters/grams are the most common.
Explanation:
Grams are very exact and meters are also common to use.
Which is an organic molecule?
C3HNO
CeBr3
CuSO4
CdI2
Answer:
i think its the first one (I'm not sure tho but i will leave the explianation)
Explanation:
Organic molecules are usually composed of carbon atoms in rings or long chains, to which are attached to other atoms of such elements as hydrogen, oxygen, and nitrogen.
(hope its clear )
Answer:
A
Explanation:
What separates mildew out from other fungi?
Answer:
Mildew is more identifiable and can be treated with store bought cleaner, but other fungi can be the result of a larger infestation
what is 120*566= just helppp
Answer:
67,920.
Explanation:
hope this helps!!
Are Eukaryotic cells the most sophisticated cell?
Answer:
Eukaryotic cells are more complex than prokaryotes, and the DNA is linear and found within a nucleus. Eukaryotic cells boast their own personal "power plants", called mitochondria.
Explanation:
Many farmers and gardeners compost their plant and animal waste. The living material naturally decays in compost bins, forming a dirt-like substance that’s rich in nutrients. The next season, farmers use this substance as a natural fertilizer for their crops. A biology student has grown tomato plants for several years. Until now, he used an artificial fertilizer formulated for tomato plants. This fertilizer caused his plants to grow faster and taller than they grew in unfertilized soil. The student wants to know whether using natural compost will cause his tomato plants to grow faster and taller than his artificial fertilizer. Answer the following questions to plan an investigation using the steps of the scientific method and help the student find the answer to his question. Part E How would you conduct your investigation? In your answer, explain your independent and dependent variables.
Answer
no . you should give one plant natural fertilizer and the other artificial fertilizer to decide which works the best
Explanation:
because it is made for tomatoes
Answer:
part E
The dependent variable is the growth rate of the plant. The independent variable is the type of fertilizer used over time. There will be three groups of tomato plants raised from seed: one group will be a control group without any fertilizer, the second group will be planted in soil with artificial fertilizer, and the third group will be planted in soil with compost. The height of the plants will be measured every five days, over a 30-day period.Explanation:
I am an element with a high melting point, a solid at room temperature, and have a shine to me that is quite striking. Scientists refer to me as a ___
Answer:
the answer is metal okkkkkk?
Compounds are the smallest unit of an element that occurs most commonly in nature.
Select the rewording of the statement that is true.
A.) Molecules are the smallest unit of an element or compound that commonly occur in nature.
B.) Atoms are the smallest unit of an element that commonly occur in nature.
C.) Molecules are the smallest unit of a compound that occurs on the periodic table.
D.) Compounds are the smallest unit of an element that occurs on the periodic table.
The answer is A.) Molecules are the smallest unit of an element or compound that commonly occur in nature.
Please help ASAP!!!!!!
if I remember correctly it should be passive transport
4. Cell Theory has three parts: The cell is the basic unit of life in all living things, all cells come from existing cells and all living things have cells. Which one is not true?*
1.Non-living things are made up of cells 2.Cells were discovered by Robert Hooke
3.All organisms are made up of one or more cells
4.All cells are microscopic in size
Answer:
1
Explanation:
cells have an exlusive deal for only living things
which type of molecule can be found in living things lacks carbon atoms
Answer:
Water.
Explanation:
Answer:
H2O
Explanation:
if plant need sunlight to grow, then the plants in the shade will not grown as well as the plants in the sun.
Answer:
True
Explanation:
This is a true statement. The answer is true.
Answer:
True, plants in the sun grow larger and fatster than those growing in the shade t
what is the composition of fatty acid tails of trans fat?
Answer: Like fats, they are typically composed of fatty acid chains attached to a backbone of glycerol. Instead having three fatty acid tails, however, phospholipids generally have just two, and the third carbon of the glycerol backbone is occupied by a modified phosphate group.
Answer:
Like fats, they are typically composed of fatty acid chains attached to a backbone of glycerol. Instead having three fatty acid tails, however, phospholipids generally have just two, and the third carbon of the glycerol backbone is occupied by a modified phosphate group.
Explanation:
Evidence 2 - Unknown Substance Investigation A group of scientists is given a sample of an unknown substance. They are asked to gather evidence to determine whether the substance is living or nonliving. The students take a small sample of the substance and observe it using a microscope. Part A: State and define two properties of life present in the substance that could be observed to indicate whether it is living or nonliving.
Answer:
Water , Oxygen
Explanation:
Explain why
Why does volcanic rock not contain many fossils
well because.. jk i have no idea. good luck though!!!!
Answer:
rocks do not contain any fossils. This is because any fossils in the original rock will have melted when the rock melted to form magma.
Explanation:
Lava
Does anyone know the answer to this hypothesis homework in science? I need help with #2 3 and 4
Answer:
2. Independent Variable
3. Dependent Variable
4. We write a hypothesis statement because it is part of the scientific process. Our hypothesis is a statement that supports our claim and can be tested.
Explanation:
In the periodic table, Groups are_____ columns.
Answer:
Vertical
Explanation:
Biology class :)
what does an organism trophic level indicate about that organism ?
Answer:
The trophic level of an organism is the position it occupies in a food web. A food chain is a succession of organisms that eat other organisms and may, in turn, be eaten themselves. The trophic level of an organism is the number of steps it is from the start of the chain.
List one Characteristic of Life that lets you
know that a tree is alive.
Answer:
growth and change, ability to reproduce; have a metabolism and breathe;, and maintain homeostasis
Explanation:
Which statement describes gravity, There is no define of measurement for gravity, Gravity is the force that pulls objects towards Earth's center, Objects that have a small mass will have no gravitational pull, Gravitational pull between two objects decrease as the mass of one increases.
Answer:
Gravity is the force that pulls objects towards the earth centre.
Explanation:
According to the postulation of Sir Isaac Newton, explaining Gravity using an apple falling down from a tree. He was so curious to find out why this happened. I hope this helps.
The statement which best describes gravity is that it is the force that pulls objects toward Earth's center. Thus, the correct option for this question is B.
What is Gravity?Gravity may be defined as a type of force through which a planet or any other celestial body draws objects toward its center. It is only the force of gravity that specifically keeps all of the planets in orbit around the sun. This force attracts a body toward the center of it.
According to the context of this question, it is a fundamental interaction that causes the mutual attraction between things with mass or energy.
The best example of gravity is understood by throwing a ball high in the air, it will certainly be coming back to the surface of the earth after attaining its maximum height with respect to the energy by which is thrown.
Therefore, the statement which best describes gravity is that it is the force that pulls objects toward Earth's center. Thus, the correct option for this question is B.
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What best describes the scientific process?
Answer:
B.
Explanation:
The scientific method follows a series of six steps in which it includes the one from observation to reaching a conclusion.
The statement that best describes the scientific process is that it is a way to answer scientific questions.
What is the scientific process?The scientific process is a method of discovering knowledge about the natural world in the following manner:
making falsifiable predictions (hypotheses). testing them empiricallydeveloping theories that match known data from repeatable physical experimentation.The scientific process involves the following steps:
Asking a questionDoing background researchConstructing a hypothesis. ...Testing of the hypothesis by doing an experimentAnalyzing the data and drawing a conclusionThe aim of the scientific process is to answer a scientific question or proffer solution to a problem.
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Question 5 (1 point)
Identify the independent variable: Two plants were grown in two different brands of potting soil, they received the same amount of
sunlight and water.
a
b
The plants
The sunlight
The water
The potting soil
С
Od