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STALIN [3.7K]
3 years ago
14

!!!Please help!!! A group of students is studying convection currents. They fill two identical balloons with the same amount of

helium. One balloon is placed in a freezer and the other in an area with warm air. After 10 minutes, the balloons are released from a height of 1 meter. Which of the following do the students most likely observe?
Question 8 options:


The cold balloon expands and rises. The warm balloon shrinks and sinks.


The balloons rise at the same rate. Both balloons are the same size.


The ballons both rise. The cold ballon is larger than the warm balloon.


The warm balloon expands and rises. The cold balloon shrinks and sinks.
Biology
1 answer:
belka [17]3 years ago
5 0

I have to also agree that is D

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C is incorrect help me
Sonja [21]
It has to be a, b or d then.
you're welcome xo 
:)

4 0
4 years ago
Dr. Graham exposes rats to a vanilla scent prior to receiving a food pellet in the left corner of their cage, but provides no fo
jenyasd209 [6]

Answer:

a. ​food pellet

Explanation:

In classical conditioning, an unconditioned stimulus is the stimulus that naturally elicits an unconditioned response. The unconditioned stimulus is usually paired with a neutral stimulus, and after pairing with a neutral stimulus, the neutral stimulus becomes a conditioned stimulus that elicits a conditioned response alone.

In the experiment described above in the question, <em>the unconditioned stimulus is the food pellet,</em> which naturally elicits the response of the rat to wait at the far left corner of the cage. The neutral stimulus which is paired with the food pellet is the vanilla scent, which now becomes the conditioned response, when paired alone.

4 0
3 years ago
Sort the items based on whether they have gravitational potential energy or chemical potential energy. liquid petroleum gasoline
poizon [28]

Explanation:

Gravitational potential energy is the energy of body due to its position in the gravitational field.

Whereas chemical potential energy is the energy within the chemical bonds of a substance.

For example, when we eat an apple then we get energy in our body so, it is the chemical potential energy stored in the apple.

Items sorted on the bases of gravitational potential energy and chemical potential energy are as follows.

Gravitational potential energy:

  • a ball thrown up in the air.
  • a stone rolling downhill.
  • water stored in an overhead tank.

Chemical potential energy:

  • liquid petroleum gasoline used in cars.
  • apples that people eat.
  • firecrackers that people set off.
4 0
3 years ago
Why is acetylcholine broken down?
Aneli [31]

Acetylcholine broken down is the process by which this neurotransmitter activates a suitable ligand-receptor to trigger a cell signaling pathway.

<h3>What is Acetylcholine?</h3>

Acetylcholine is a chemical messenger (i.e., a neurotransmitter) that is used to transmit signals inside the body.

Acetylcholine broken down is due to its hydrolysis, which ends cell signaling between brain synapses.

In conclusion, Acetylcholine broken down is the process by which this neurotransmitter activates a suitable ligand-receptor to trigger a cell signaling pathway.

Learn more about Acetylcholine signaling here:

brainly.com/question/13993931

#SPJ12

8 0
2 years ago
When using a dichotomous
IRISSAK [1]
I think it is “D. More specific”
6 0
4 years ago
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