Why do scientists carry out experiments?
A.
Because scientific knowledge is based on observations

B.
Because scientific knowledge is full of untested theories

C.
Because scientists like to control variables

D.
Because scientists like to work in labs

Answers

Answer 1

Answer:

A

Explanation:

the scientist always makes a hypothesis


Related Questions

What does "reliability" mean in these sentences?

Answers

Answer:

The first one is correct

Answer: The first one, the quality of being able to be trusted.

Don't really know how to explain but being reliable is being trustworthy and responsible.

Plzzz help Why are females in control of sexual selection and the evolution of males?

Answers

Answer:

What i can say is that WE ARE NOT.

Explanation:

Sexual selection is mostly our choices bc we have the uterus and body parts to produce babies. Some men take advantage of that hence rapxe. The evolution of males is sometimes in our control bc we are trying to teach them not to rapxe.


Can someone please help me on this plz I beg u :(

Answers

Answer:

Coleoptera is correct! Hope this helps.

ANSWER IS Coleoptera

How do shale oil and tar sands compare to conventional
(regular) oil deposits?

Answers

Answer:

Oil shale is a form of sedimentary rock that contains kerogen, which is released as a petroleum-like liquid when the rock is heated. Tar sands are a combination of clay, sand, water and bitumen, which is a heavy hydrocarbon.

Additional info:

The term oil sands refers to a particular type of nonconventional oil deposit that is found throughout the world. Oil sands, sometimes referred to as tar sands, is a mixture of sand, clay, other minerals, water, and bitumen. The bitumen is a form of crude oil that can be separated out from the mixture.

The primary distinction between crude or conventional oil and shale oil is the way it collects. The oil in shale is typically found in smaller batches. As a result, shale oil often needs to be fractured so that the oil trapped within the shale can be recovered.

Answer:

please give me brainlist and follow

Explanation:

Oil shale is a form of sedimentary rock that contains kerogen, which is released as a petroleum-like liquid when the rock is heated. Tar sands are a combination of clay, sand, water and bitumen, which is a heavy hydrocarbon. Like the kerogen in oil shale, tar sands' bitumen can be upgraded to synthetic crude oil.

What is the term for a male sheep that can be a
father?

Answers

Answer:

ram

Explanation:

What is the purpose of rRNA?

A. to retrieve amino acids

B. to be a working copy of DNA

C. to assemble proteins

D. to replicate the genetic code in mitosis

Answers

Answer:

A

Explanation:

The primary function of rRNA is in protein synthesis – in binding to messenger RNA and transfer RNA to ensure that the codon sequence of the mRNA is translated accurately into amino acid sequence in proteins.

Suggest reasons for the color patterns of the frog and its lack of color on the ventral surface.

Answers

Answer:

To save itself.

Explanation:

The color patterns of the frog and its lack of color on the ventral surface allows the frog to protect itself from their predators because the frog changes its colour and the predators are unable to see them. The color patterns of frogs and their lack of color on the ventral surface allow frogs to escape from their predators. If the frog does not change its colour, the predators will see them and the frog will be catch by its predators and feed on them so this is the reason that frog changes colour or the presence of colour patterns.

Why are archaea in a different domain from bacteria?
A. They are multicellular, but bacteria are unicellular.
B. They are thought to have separate paths of evolutionary
development
C. They are able to perform endosymbiosis, but bacteria are not.
D. They have no similar characteristics.

Answers

Answer:B

Explanation:

Archaea is in a different domain from bacteria because they are thought to have separate paths of evolutionary development. Therefore, the correct statement is option B.

What are the differences between archaea and bacteria domains?

Archaea and bacteria are both prokaryotic organisms, but archaea are more closely related to eukaryotes than bacteria. Archaea have unique  lipid membrane and cell wall components that are different in composition than those found in bacteria.

These differences suggest that archaea and bacteria evolved to have separate paths of evolutionary development early in the history of life on Earth and then classified into Archaea and Bacteria domains.

Based on the phylogenetic tree constructed by researchers, the tree has classified life into three domains which are Archaea, Bacteria, and Eukarya These domains are based on their fundamental genetic and biochemical differences.

Therefore, archaea and bacteria are in a different domain because they followed separate paths of evolutionary development.

Learn more about the archaea domain here:

https://brainly.com/question/31089143

#SPJ5

Which mammal does not give live birth whale sea cow duck-billed platypus kangaroo dog

Answers

Answer:

Duck-billed platypus

Explanation:

The duck-billed platypus is the only mammal that lays eggs.


BRAINIEST ANSWER!

HELP :))

Answers

Answer:

True

Explanation:

Don't know tell me if I'm wrong

Answer:

True

Explanation:

Actually it destroyed a LOT more than that...

The picture shown below is from the aftermath of an earthquake. Describe what has happened.

Answers

Well, as you can see from the picture many things happened. You can see that many things are shaken up a bit include platforms and roofs. You can also see what looks to be cracks in the road and well as debris.

Pleas e Brainlyiest if you answer

Answers

Answer:

B

Explanation:

Answer:

The second option (i think)

Explanation:

Chromosomes are the things that make organisms what they are. They carry all of the information used to help a cell grow, thrive, and reproduce. Chromosomes are made up of DNA. Segments of DNA in specific patterns are called genes.

How does acid rain (deposition) form and travel to effect the environment?

Answers

Answer:

The ecological effects of acid rain are most clearly seen in aquatic environments, such as streams, lakes, and marshes where it can be harmful to fish and other wildlife. As it flows through the soil, acidic rain water can leach aluminum from soil clay particles and then flow into streams and lakes.

Explanation:

Wheat, barely ,oats and rice are examples of what type of crop ?​

Answers

Answer:

Cereal crops

Explanation:

Answer:

Cereal crops

Explanation:

hope it helps :)

As a way to reduce the number of cases of malaria, a human tropical disease, a specific DNA sequence is inserted into the reproductive cells of Anopheles mosquitoes. Which process was most likely used to alter these mosquitoes? Explain your answer
A. cloning studies
B. genetic engineering
C. natural selection
D. random mutations

Answers

Answer:

B. genetic engineering

Explanation:

HELP PLEASE I WILL GIVE BRAINLIEST

Answers

Explanation:

A is the correct answer in my opinion. Thanks.

I think A as well :)

Describe the role of (A) bacteria fixing nitrogen as they live symbiotically with some plant species, (B) nitrifying bacteria, and (C) denitrifying bacteria in the nitrogen cycle.

Answers

I think It is A what is the question?

Explanation:

10 points!!!

In a series circuit with three bulbs,
a.
there are many paths for the current to take.
b.
the remaining two bulbs are not affected if one bulb burns out.
c.
all of the bulbs become dimmer as more bulbs are added.
d.
a switch is never used.

Answers

Answer:

C

Explanation:

Because more bulbs are add the dimmer they get

The region around a star where sunlight is strong enough to enable photosynthesis and keep water on the surface of a planet liquid is called what?

Answers

AKA The “Goldilocks Zone” plz give brainliest! have a nice day. Habitable Zone (HZ) is the answer

Which of the following distinguishes the relationship between a taxon and taxonomy?
A taxon is an anomaly in the classification system known as taxonomy.

B taxon is a level of the classification system known as taxonomy.

C taxon is a specific trait in the classification system known as taxonomy.

D taxon is an unknown factor in the classification system known as taxonomy.​

Answers

Answer:

B taxon is a level of the classification system known as taxonomy.

Hope this helps!

Hey guys I'm having some trouble with a few living environment questions

Answers

Explanation:

guessing

amino acid?

protein building blocks

peptide bonds hold them together

amoeba sisters: video recap - viruses

answer key?

Answers

OK

wait do you have quizlet?

Arturo ran a 3,000-meter race. His running time from start to finish was 10 minutes. What was Arturo's average speed?

Answers

Answer:

300 meters/min

Explanation:

average speed = distance / time

(3000 m) / (10 min) = 300 meter per minute

if you need it in meters/sec then just multiply 10 by 60 first and then continue

(3000 m) / (600 sec) = 5 m/s

What is the purpose of RNA?

To hate on DNA

To act as a messenger from DNA to the rest of the cell

No file uploads!!!!!!

Answers

Answer:

to act as a messenger from DNA to the rest of the cell.

Explanation:

I feel like this one was pretty self explanatory lmfa.o

During the water cycle, water moves from the air to the ground and then back to the air. Which of the following processes causes water to move from Earth’s surface to the atmosphere during the water cycle?
A.
precipitation
B.
evaporation
C.
condensation
D.
crystallization

Answers

Answer: B. evaporation

Answer:

B-Evaporation

Explanation:

I had it on study island and got It correct :)

Biodiversity
8
A farmer who owns a large fruit orchard has noticed that certain tree species in his orchard are failing to produce fruit and are slowly
dying. This has caused a decrease in the variety of fruit available for him to sell to consumers. Which of the following changes has
most likely caused this change in biodiversity?
OA
increased soil aeration due to an increase in earthworm populations
OB
decreased rainfall due to a prolonged period of drought
OC. decreased competition for space due to the removal of weeds
OD
increased pollination due to an increase in pollinator populations

Answers

Answer:

OA increased soil aeration due to an increase in earthworm populations.

Answer:

it is B. decreased rainfall due to a prolonged period of drought

Explanation:

trust me i got it right on my quiz

how would uranus not be classified as a dwarf planet and what i mean by that is there anything that could happen that would just make it a dwarf planet

Answers

Answer:

Uranus Could Not Be Considered A Dwarf Planet Unless..

Explanation:

I don't understand your problem that well. However dwarf planets have to file these three criteria.

1. Orbits the sun,

2. Has enough mass to assume a nearly round shape,

3. Has not cleared the neighborhood around its orbit and is not a moon.

For predation to occur, there must be a predator species and a prey species. Define predator and prey and give an example of each.

Answers

A predator is a carnivore animal that preys on prey animal. Prey animals are usually small herbivores or just smaller animals. Examples, lion and gazelle, bear and salmon, wolf and deer.

1Which of the following animals is a primary consumer?

Answers

cant see the following animals

What phylum does green algae belong in

Answers

Answer:

Phylum Chlorophyta

Explanation:

hope this helps :)

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