How do scientists test theories

Answers

Answer 1

Answer:

using data, preferably multiple types of data from multiple sources.

Explanation:

hope this helps

Answer 2
Scientist tests theories by performing tests to see if the theory works, they also perform data, and along other things.

Related Questions

As plants diverged from a common ancestor, characteristic features evolved that distinguished
the main plant groups from one another. Which statement shows the evolutionary sequence in
which these features developed?
A. vascular tissue, seeds, flowers
B. seeds, vascular tissue, flowers
C. flowers, seeds, vascular tissue

Answers

The statement 'vascular tissue, seeds, flowers' shows the evolutionary sequence in which plant features developed (Option A).

What is evolution?

Evolution means descendence with modification, which mainly occurs due to natural selection.

In terrestrial plants, the main evolutionary feature that emerged was the appearance of vascular tissues.

Subsequently, terrestrial plants evolved to produce seed plants and then flowers (angiosperm plants).

Learn more about plant evolution here:

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suggest reasons, is a fall armyworm an insect or not​

Answers

Fall armyworm larvae Armyworms belong to the insect order Lepidoptera and family Noctuidae

Saliva flows out of the salivary glands into your mouth is it diffusion osmosis or neither

Answers

Secretion from the salivary glands is driven by osmosis following the establishment of osmotic gradients between the lumen, the cell and the interstitium by active ion transport.


The major pathway into saliva for most steroid hormones and other small, neutral molecules is by passive diffusion. The salivary glands are surrounded by dense beds of capillaries, and many blood components pass easily through the capillary walls, bathing the saliva glands.

True or false? All cells share four key components: plasma/cell membrane, ribosomes, DNA, and cytoplasm.

Answer: True

Answers

Answer:

TRUE

Explanation:

Brainliest

HELP ME OUT PLS!!!!!!!!

3) The motion of the Earth is modeled here as it moves on its axis and around the Sun. Which of these statements correctly identifies how the illustration supports the concepts of seasons on Earth? Select ALL that apply

A) The tilt of the Earth is responsible for the seasons.

B) The rotation of the Earth is responsible for the seasons.

C) The proximity of the Earth to the Sun is responsible for the seasons.

D) The revolution of the Earth around the sun is responsible for the seasons.

E) The intensity of the sunlight on Earth is different as the Earth revolves around the sun​

Answers

Answer:

A -- The tilt of the Earth is responsible for the seasons.

Explanation:

Because Earth's tilted axis causes the seasons.

Hope this helps! Please let me know if you need more help or think my answer is incorrect. Brainliest would be MUCH appreciated. Have a wonderful day!

Where do new cells come from?


A. Mitochondria
B. Nucleus
C. Ribosomes
D. Other cells


Answer: D

Answers

Answer:

D.

Explanation:

They come from other cells in cell division, that is when the mother cell divides into new cells, and those are the daughter cells.


I hope it helps! Have a great day!

Muffin ^^

Which organism will most likely become fossilized from being buried in sediment? Insect , snail, jellyfish or a worm

Answers

Answer:

When an organism is buried quickly, there is less decay and the better the chance for it to be preserved. The hard parts of organisms, such as bones, shells, and teeth have a better chance of becoming fossils than do softer parts. One reason for this is that scavengers generally do not eat these parts.

Explanation:

This is a multiple choice question )Which of the following is an example of a phenotype?

A. The actual Height of a organism

B. The gene that determines the height of an organism

C. all the heights a organism could possibly be

Answers

Answer:

The correct answer should be C

Instructions:
Place a T beside those statements you think are true and an F beside those statements you think are false.

Anticipation Statements:
Global warming can be stopped if we stop air pollution today.

The greenhouse effect is a new phenomenon causing global warming.

The health of our climate depends on ocean and air circulation.

The seasonal melting and freezing of sea ice disrupt climate patterns.

Ozone in the stratosphere needs to be removed from the atmosphere.

Answers

Answer:

1. T

2. F

3.T

4. F

5. F

Explanation:

trust me these are the right answer

Global warming can be stopped if we stop air pollution today. The given statement is true.

The greenhouse effect is a new phenomenon causing global warming. The given statement is false.

The health of our climate depends on ocean and air circulation. Thus, the given statement is true.

The seasonal melting and freezing of sea ice disrupt climate patterns. Thus, the given statement is false.

Ozone in the stratosphere needs to be removed from the atmosphere. Thus, the given statement is false.

What is global warming?

The term global warming has defined as the heating of globe due to excess air pollution and other factors. There are main two reasons and effects of Global warming on Global Climate are such as Global warming has been caused by two reasons man-made and natural reason well it is man-made reasons which cause much Global warming, for example, Burning fossil fuels and gases like Carbon dioxide cause Global Warming.

Global warming would be having a huge impact on our planet's climate today. the slowly increase of earth's temperature causing serious problems such as floods, temperature rise and sea-level rise.

Therefore, Global warming can be stopped if we stop air pollution today. The given statement is true.

The greenhouse effect is a new phenomenon causing global warming. The given statement is false.

The health of our climate depends on ocean and air circulation. Thus, the given statement is true.

The seasonal melting and freezing of sea ice disrupt climate patterns. Thus, the given statement is false.

Ozone in the stratosphere needs to be removed from the atmosphere. Thus, the given statement is false.

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Enzymes are a diverse group of biological catalysts.Enzymes act as catalysts , because they?A. Give us immediate quick energy
B.Speed up chemical reactions in our body by lowering energy
C. Increase the amount of energy needed to break down substrates.
D. Can act on any substrate molecule at any time

Answers

Answer:

B

Explanation:

Enzymes in our bodies are catalysts that speed up reactions by lowering the activation energy necessary to transform a reactant into a product.

What is the difference between B-cell lymphocytes and T-cell lymphocytes?
B cells regulate blood pH, and T cells regulate body temperature.
B cells are produced in the thymus, and T cells are produced in the bone marrow.
B cells engulf bacteria, and T cells carry bacteria to the lymph nodes.
B cells produce antibodies, and T cells destroy infected cells.

Answers

Answer:

B cells and T cells are the white blood cells of the immune system that are responsible for adaptive immune response in an organism. Both the cells are made in the bone marrow.Explanation:

B cells produce antibodies, and T cells destroy infected cells. So, the correct option is D.

What are B cells and T cells?

The two primary categories of lymphocytes are T cells and B cells. Antibody molecules made by B cells can attach to and kill invasive viruses and bacteria. T cells are the immune system's first line of defence against foreign invaders. They also create cytokines, that are biological agents that aid in the activation of other immune system components.

T cells can eliminate malignant or contaminated cells. Moreover, they control overall immune response by assisting B cells in eradicating foreign infections. Antibodies are made by B cells. An antibody is a class of protein produced by B lymphocytes, sometimes known as B cells.

Therefore, the correct option is D.

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Help please ASAP

Which action would best help a person prepare for a power outage during a
blizzard?
A. Planning for safely heating their home
B. Boarding up windows
C. Stocking up on entertainment media
D. Planning a daily exercise routine

Answers

Answer:

I think it's A

Explanation:

Since C and D don't have to do with a power outage

B won't help either

Answer:

A

Explanation:

A. Planning for safely heating their home

How do the structures of organims body be used as evidence of evolution?​

Answers

Homologous structures suggest that comparable selected pressures can produce similar adaptations, whereas analogous structures show that similar selective pressures can cause similar adaptations (beneficial features).
Similarities and differences among biological molecules (for example, in the DNA sequence of genes) can be utilized to assess the relatedness of species.

I hope this helps you
:)

The main regions of the brain are the
A. Spinal Cord, Brain Stem and cerebrum
B. Cerebellum, Spinal Cord and Brain Stem
C. Cerebrum, Cerebellum, and Spinal Cord
D. Cerebrum, Cerebellum, and Brain Stem​

Answers

The brain is composed of the cerebrum, cerebellum, and brainstem. (D)

Many birds will ________ in the spring.
A. grow feathers
B. hibernate
C. lay eggs
D. become less active

Answers

I think it is C lay eggs but if not sorry

Answer: I think is C

Explanation: if I wrong then I’m sorry so much and I hope you get right

Which option best characterizes the following passage in regard to recent developments in agriculture?

“Combined investments helped discover and develop farming equipment, which resulted in higher yields and the need for fewer farming personnel.”


Farms provide fewer jobs compared to agricultural research and development.
Farms provide fewer jobs compared to agricultural research and development.

Farming equipment use eventually turns farms into mass-producing factories.
Farming equipment use eventually turns farms into mass-producing factories.

Farming equipment is more expensive now than it was fifty years ago.
Farming equipment is more expensive now than it was fifty years ago.

Farms now produce more crops, creating a need for more farm workers.

Answers

Answer:

Farming equipment is more expensive now than it was fifty years ago

Explanation:

much more technology goes to farm equipment. A combine could cost more them a $ 500k

Answer: Farms provide fewer jobs compared to agricultural research and development.

Explanation: i got it right on edge


Which region of the nephron is labeled in blue in the image?
Proximal convoluted tubule
Loop of Henley
None of the above

Answers

Proximal convoluted tubule is the part labeled from the above diagram of nephron.

What is nephron?

The nephron is the small microscopic structural and functional unit of the kidney. It comprises of a renal corpuscle and a renal tubule. The renal corpuscle is composed of a tuft of capillaries which is refer to as the glomerulus and Bowman's capsule. The renal tubule extends from the capsule.

Therefore, The proximal convoluted tubule is a portion of kidney nephron between the loop of Henle and the collecting tubule.

Learn more about nephron from the link below.

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Which makes viral infections difficult to defeat?
• A. Macrophages work slowly.

B. The immune system must attack the body's own cells.

C. Viruses are attacked by a nonspecific immune response.
D. Viruses live outside of cells.

Answers

The statement 'the immune system must attack the body's own cells' makes viral infections difficult to defeat.

What is an infection?

Infection is a type of harm that the organism suffers when pathogenic microorganisms and viruses enter the body.

Pathogenic microorganisms include, for example, bacteria, fungi, and virus entities.

These pathogenic microorganisms/entities have specific antigens which can be recognized by the immune system.

Learn more about virus infections here:

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1. Give two reasons why preserving biodiversity is important to humans

Answers

Answer:

hope this Wil help

Explanation:

biodiversity provides functioning ecosystems that supply oxygen, clean air and water, pollination of plants, pest control, wastewater treatment and many ecosystem services

Which part of the brain is responsible for decision making, problem solving and planning?.

Answers

Answer:

The prefrontal cortex.

Explanation:

Which type of rock cools on the earth's surface?

Answers

Explanation:

extrusive

The two main categories of igneous rocks are extrusive and intrusive. Extrusive rocks are formed on the surface of the Earth from lava, which is magma that has emerged from underground. Intrusive rocks are formed from magma that cools and solidifies within the crust of the planet

I Think Igneous Rock But I Dunno

how would you go about a driver who is driving recklessly on the free way or any road you encounter

Answers

Answer:

Drive from as far away from them as possible. Attempt to speed past them.Or, call the police.

Which of the following agricultural practices can cause ecosystem disruption?

Tiling soil
Storing crops
Slash-and-burn
Drip irrigation

Answers

Answer:

C.) Slash-and-burn

Explanation:

took the exam and got it right

The Brain Stem ___.

A. regulates breathing and heart rate
B. helps with movement and balance
C. resides between the cerebrum and cerebellum
D. is the second largest brain part​

Answers

Answer: Your best answer is A. regulates breathing and heart rate

Hope this helps!

Where in the United States and what year was the first documented case?
West Nile virus!
please help me

Answers

Answer:

The first reported case happened in Queens, New York in 1999.

"West Nile virus (WNV) has quickly established itself in North America since its recognition in New York City in 1999. Historically, WNV has been associated with temporally dispersed outbreaks of mild febrile illness."

West Nile Virus: An Historical Overview

James J. Sejvar

Ochsner J. 2003 Summer-Autumn; 5(3): 6–10.

PMCID: PMC3111838

4. Which statement describes the nutrient cycle?

the movement of nutrients within plants that allows them to conduct photosynthesis

the movement of nutrients within all soil layers that allow plants to grow and seeds to germinate

the movement of the three non-mineral nutrients that are absorbed through the soil

the movement of nutrients from the physical environment into living organisms and back again​

Answers

Answer:

The correct answer is - the movement of nutrients from the physical environment into living organisms and back again​

Explanation:

Answer:

D/ The movement of nutrients from the physical environment into living organisms and back again.

Explanation:

I took the test and got it right

What happens to ADP after ATP hydrolysis?

Answers

ADP is combined with a phosphate to form ATP in the reaction ADP+Pi+free energy→ATP+H2O. The energy released from the hydrolysis of ATP into ADP is used to perform cellular work, usually by coupling the exergonic reaction of ATP hydrolysis with endergonic reactions.

Why might using other sources of power, like wind and solar energy, help to slow global warming? A. All types of energy cause global warming to increase. B. Wind and solar energy require heat from the sun, which would lower global temperatures. C. Wind and solar energy do not require the use of fossil fuels. D. Wind and solar energy use carbon dioxide, which would help remove it from the atmosphere.

Answers

Answer:

c

Explanation:

fossil fuels release greenhouse gasses into the atmosphere, not using them would end a lot of that pollution, thus lowering global warming

The graph here shows a generalized population of deer on plateau. The primary food source for these deer is grasses on plateau. The area has been cleared of natural predators to the deer. Which statement Best explains what happens after point B on the graph? ​

Answers

Answer:

D) In the absence of natural predators, the deer overgrazed on their grasses, leading to an overshoot and die off in the population when they exceeded carrying capacity.

Answer:

d

Explanation:

d

what causes slab pull in earths crust

Answers

Answer:

The process of a tectonic plate descending into the mantle is termed subduction. Slab pull occurs when an oceanic plate subducts into the underlying mantle. Subduction zones are just one type of convergent boundary where two tectonic plates are colliding.

Explanation:

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