A student has several pet hermit crabs. He wants to determine how the hermit crabs choose which shell they inhabit. He thinks that the crabs choose their shells based on the shells' color and wants to design an experiment to test this. Which of these steps should the student include in his experiment? A. He should add shells that are different colors, but the same size and type, to the tank and observe which shells the hermit crabs choose. B. He should observe hermit crabs in their natural environments and determine how shells help protect them from predators. C. He should place the hermit crabs in different tanks and change the temperatures in the tanks to see if it effects their shell selection. D. He should gather shells that are different sizes and different colors, place them in the tank with the hermit crabs, then observe which shells they choose. Reset Next Question

Answers

Answer 1
A. He should add shells that are different colors, but the same size and type, to the tank and observe which shells the hermit crabs choose.

Durning an experiment you need to keep everything the same but only change the certain things based on your theory.
Such as how the student wanted to see if the color attracted the crab. If he had changed the size and type of the shell then the crab would have chosen the bigger one as they tend to grow into larger shells.

Related Questions

Can hydrogen peroxide be broken down by catalysts other than those found in a living system? What is/are the control(s) and why are they needed?

Answers

Answer:

hi I not talk spanish

Explanation:

not talk spanish

Which generalization can be made from the data in the table?
1.The higher the temperature, the fewer chirps there will be in 10 seconds.
2.The chirps occur closer together as the temperature increases.
3.The chirps become farther apart as the temperature increases.
4.There is no relationship between temperature and the time between chirps.

Answers

I think it's the third one. But I'm not sure. Hope this helps

The generalization that can be made is: 2.The chirps occur closer together as the temperature increases.

Generalization is a statement you state after making an inference from an observation. For example, we can make a generalization by observing or analyzing the data from the experiment conducted which are given in the table.

From the table given, there seems to be a trend that can be observed. Temperature seems to influence the number of seconds between each chirp of the cricket.

A closer observation of the trend from the data given shows that in general, as the temperature was increased, the seconds between chirps seem to shorten.

Therefore, we make a generalization stating that: "2.The chirps occur closer together as the temperature increases."

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https://brainly.com/question/10920431

What are the 4 steps of Natural Selection?

Answers

Answer:

Variation. Organisms (within populations) exhibit individual variation in appearance and behavior. ...

Inheritance. Some traits are consistently passed on from parent to offspring. ...

High rate of population growth. ...

Differential survival and reproduction.

Explanation:

Describe the two signals and pathways that are activated when you touch something and experience pain

Answers

The medial thalamus projects to widespread areas of the forebrain, including the somatosensory cortex. Thus there are two major ascending pathways for pain: a direct lateral spinothalamic pathway and an indirect medial spinoreticulothalamic pathway.

Which option identifies the most likely contributor to a microclimate that forms in a northern-facing valley?


exposure

shelter

precipitation

topography

Answers

Answer:

Topography

Explanation:

I just took the quiz.

Answer: pretty sure it’s topography

Explanation: edge 2021

Based on the theory of natural selection, which of the explanations best describes the change in the beak depth of the medium ground finch during the dry years?

A.
The beak depth of the individual finch decreased.

B.
The beak depth of the finch population decreased.

C.
The beak depth of the individual finch increased.

D.
The beak depth of the finch population increased.

Answers

Answer:

B

Explanation:

The beak depth of the finch population decreased.

Answer:

D

Explanation:

Because when its dry season it increases

HELPPP ASAPPPP!!!! Plsssss

Answers

Answer:

Waxing gibbous

Answer:

waxing gibbous

Explanation:

Why is natural selection not random

Answers

Answer : because natural selection helps certain animals to adapt to their current environment

Explanation:

1. What are 5 sources of natural gas used today.

Answers

Additional sources of hydrocarbon gases that are included in U.S. natural gas production and consumption are supplemental gaseous fuels, which include blast furnace gas, refinery gas, biomass gas, propane-air mixtures, and synthetic natural gas (natural gas made from petroleum hydrocarbons or from coal).

answer dis please im desperato

Answers

Answer:

C which would be considered secondary consumers.

Explanation:

They are commonly called carnivores, and examples include lions, snakes, and cats.

I hope this helps

How is the brain involved with the senses and what is the relationship to the wat a personreacts to objects?

Answers

Answer:

The senses are the components of our nervous system that capture stimuli from the environment for transmission to the brain, and it is there where the information is processed to issue a response. All sensations are electrical signals that travel through neurons which form a network that communicates all organs with the center of the nervous system, and communicate with each other to transmit the electrical impulse through a process known as synapsis.

Explanation:

The brain is an organ that controls the activity of the body, both its conscious and unconscious functions. It is located in the head and corresponds, therefore, to the encephalon of humans and other vertebrates and is subdivided into forebrain, midbrain and hindbrain.  

The brain acts on the rest of the organism by generating muscle activity or by the production and secretion of chemicals called hormones. Thereby the brain controls responses to changes in the environment. Some basic types of response such as reflexes may be mediated by the spinal cord or peripheral ganglia, but sophisticated intentional control of behavior based on complex sensory information requires the integration of information.

The thalamus, which is located in the central part of the brain, processes and coordinates the messages from the senses that it receives from the body. Five senses are considered to exist: sight, touch, smell, taste and hearing. For that, the information perceived from the outside must reach the brain.

The senses are the components of our nervous system that capture stimuli from the environment for transmission to the brain, and it is there where the information is processed to issue a response. Therefore, all sensations perceived from the outside are electrical signals that travel through neurons. For example, the eyes transform light signals into electrical impulses, which travel to the brain where they are transformed into electrical signals.

Neurons form a network that communicates all organs with the center of the nervous system, and communicate with each other to transmit the electrical impulse through a process known as synapsis, which is mediated by molecules called neurotransmitters. Since the electrical impulse cannot jump directly from one neuron to another, these neurotransmitters are needed. When the active neuron produces them, the next neuron in the network detects them and becomes electrically charged. Once this has happened, it produces neurotransmitters again so that the next one becomes electrically activated. This is how the electrical impulse reaches the brain.

Twenty years after his voyage to the Galapagos, what did Darwin identify as the creative force driving the evolution of species?

Answers

Darwin discovered many animals but he observed finches(a type of bird) with unique beaks.

Natural selection drives evolution

Mollusks are invertebrates. What does it
mean when an animal is an invertebrate?
A. They all have shells.
B. They have a backbone.
C. They do not have a backbone.
D. They live in the ocean.

Answers

Answer:

c they do not have a backbone

Explanation:

Invertebrates are animals that neither possess nor develop a vertebral column (commonly known as a backbone or spine), derived from the notochord. This includes all animals apart from the subphylum Vertebrata. Familiar examples of invertebrates include arthropods (insects, arachnids, crustaceans, and myriapods), mollusks (chitons, snail, bivalves, squids, and octopuses), annelid (earthworms and leeches), and cnidarians (hydras, jellyfishes, sea anemones, and corals).

Answer:

c

Explanation:

bc i took the test

A mRNA codon is AGC. The tRNA anticodon will be

Answers

YES YES YES YES YES YES YES YES I don’t get what u are saying but points for me!
A mRNA codon is AGC. The tRNA anticodon will be UCG.

Mitosis vs Meiosis, someone help me with this, ill give brainiest.

Answers

Mitosis produces two diploid (2n) somatic cells that are genetically identical to each other and the original parent cell, whereas meiosis produces four haploid (n) gametes that are genetically unique from each other and the original parent (germ) cell.

♡ hi there!! i tried to go back to my notes, but i couldn't find anything. but here if an explanation i found. ♡

different: mitosis consists of one stage whereas meiosis consists of two stages. mitosis produces diploid cells (46 chromosomes) whereas meiosis produces haploid cells (23 chromosomes). mitosis produces two identical daughter cells whereas meiosis produces four genetically different daughter cells.

similar: both involve cell division, both the processes occur in the M-phase of the cell cycle. In both cycles, the stages are common – metaphase, anaphase, telophase and prophase. synthesis of DNA occurs in both.

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Question:

What is the oxidized form of the molecule found after glycolysis?

Possible answers:

A. ADP
B. Pyruvate
C. Ether
D. Lactose
E. Phosphate
F. Acetaldehyde
G. TCA

Answers

Answer:

What is the oxidized form of the molecule found after glycolysis Pyruvate

Explanation:

Pyruvate

What activities can increase the amount of atmospheric CO2?

Answers

Answer:bush burning

Explanation:

Since CO2 is a byproduct of combustion, it is released in a large quantity during bush burning

burning fossil fuels increases the amount of CO2 in the atmosphere!
ex. coal, gas

In DNA, if the % of adenine is 30%, what is the % of thymine?

Answers

Answer:

35%

Explanation:

Since we know that 35% of the bases in the section of DNA are adenine, we can conclude that 35% of the bases are thymine.

the pencil and the book both fall down at the same time because

Answers

Answer:

They both weighed tha same

Explanation:

A book is heavier than a pencil, but if they are equal in weight. Then they will fall at the same time

Hope this helped

Gravity works independently of mass :) hope this helps and have a nice day!

Question 3
Earth's plates move due to a convection celin
A the Earth's crust
B. the Earth's mantle.
the Earth's inner core.
D. the Earth's outer core.

Answers

Answer:B

Explanation:Earth’s core that cause the molten rock in the mantle layer to move, and it moves in a pattern.

What describes the conversion of ADP to ATP?

A)an input of energy as both phosphate groups detach


B)a release of energy as one phosphate group detached

C) a release of energy as a third phosphate group is attached

D) an input of energy to attach a third phosphate group

Answers

Answer:

D

Explanation:

The option that describes the conversion of ADP to ATP is D) an input of energy to attach a third phosphate group.

What is ADP?

ADP (adenosine diphosphate) is a molecule that is made up of adenosine and two phosphate groups. ATP (adenosine triphosphate) is a molecule that is made up of adenosine and three phosphate groups. The conversion of ADP to ATP is an energy-intensive process that requires an input of energy.

The third phosphate group is attached to ADP by a process called phosphorylation. Phosphorylation is an energy-requiring reaction that uses ATP as a source of energy.

Find out more on ADP conversion at https://brainly.com/question/14452154

#SPJ6

the ratio between mass and volume of mass per unit volume.
Solid
Volume
Mass
Density​

Answers

Yes that’s right absolutely

Which feature of chytrids makes them different from the other types of fungi? the material that strengthens their cell walls the special digestive material they release their use of budding to reproduce their ability to live in dry environments

Answers

Answer:

the material that strengthens their cell walls

Explanation:

Chytrids originate from the kingdom fungi and a division known as Chytridiomycota. They contain a feature of unique characteristics by the presence of the chitin and the cellulose cell wall. The chitin made up the component of their cell wall in fungi but in Chytrids, the cellulose helps to strengthens their cell walls.

Answer:

A. the material that strengthens their cell walls

Write a Haiku about science please

Answers

Light and energy,

Electricity abound,

Generating life.

5 important things Gregor John Mendel did

Answers

1- discovered the fundamental laws of inheritance

2-He deduced that genes come in pairs

3- He said genes are inherited as distinct units

4-(About genes)one from each parent.

5-tracked the segregation of parental genes and their appearance in the offspring as dominant or recessive traits.


Right now we have the ability for genetic modification (plants, animals, diseases, or humans). Discuss a positive or a negative use and whether you agree or disagree with it.

Answers

Answer:

There are pros and cons in genetic modification.

Explanation:

Pros: It will help with plant growth and because of global warming it can help keep the plants alive. It can also help cure some diseases and help humans stay alive with what is coming for us in the future.

Cons: If we do this, we would gain more diseases and have new mutations going on in the world. The Plants may mutate and we may lose some types of animals to new diseases.

Explain why it is very important for the gametes to divide by meiosis. What could happen if the gametes accidentally divide by mitosis? can someone answer in a sentence!!

Answers

Meiosis is important because it ensures that all organisms produced via sexual reproduction contain the correct number of chromosomes. Meiosis also produces genetic variation by way of the process of recombination.

Explanation: Gametes are made via meiosis which produces cells with n=23 instead of diploid cells. If gametes were produced instead by mitosis each gamete would be diploid not haploid.

Please help! I promise to give brainiest to the person who helps!!
How are the organs attached to the other body systems?

Answers

the body has levels of organisms that built on each other cells make up tissues, tissues make up organs, and organs make up organs system the function of an organs system

depends on the the integrated activity of it organs for instance digestive system organs corporate to process food

what would probably happen if demario shared a drinking glass with his best friend who was sick with the flu and had a fever

Answers

Answer:

Demario would probably get the flu as well

Explanation:

Demario would become sick with the flu within a few days.

Can someone help me really quick!!

Answers

Answer:

12 degrees C

Explanation:

12 C = 53.6 F

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