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NemiM [27]
3 years ago
12

Which of the following is part of the brain stem?

Biology
1 answer:
ohaa [14]3 years ago
8 0
I think it's C. I'm sorry if I got it wrong but I hope this kinda helps!! : )
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Dominic, a newborn, received antibodies from his mother through the placenta and breast milk. Which specific type of immunity is
elena-s [515]

Answer and Explanation:

1. passive natural immunity

2.  decrease

3. passive artificial immunity

4. His body contains antibodies from his previous exposure, and his body was able to quickly fight off the infection

5. active natural immunity

6.  B cells

7.  Neutrophils

6 0
3 years ago
When his husband turns out the light at night, Rodney cannot see anything at all in his bedroom. After a while his eyes adjust a
saul85 [17]

Answer:

rod photoreceptors

Explanation:

The retina of the eye has 2 types of sensory receptors or photoreceptors. They are the rod cells and the cone cells. The rod cells mostly found at the outer edge of the retina of the eye, which are numerous and more sensitive compared to the cone cells. The cone photoreceptors are found in the macula.

The rod photoreceptors are responsible for night vision mainly and function in dim light or less intense light, while the cone receptors are responsible for color sensitivity.  

The rod photoreceptors are responsible for processing his ability to see objects in the darkness.

3 0
3 years ago
The part of the neuron that receives impulses is called
kifflom [539]
Your answer will be dendrites. they receive messages.
3 0
3 years ago
List and explain the 3 paths natural selection can take.
evablogger [386]

Answer:

1. Stabilizing Selection  

2. Directional Selection  

3. Disruptive Selection  

Explanation:

Stabilizing Selection  

This type of natural selection occurs when there are selective pressures working against two extremes of a trait and therefore the intermediate or “middle” trait is selected for. If we look at a distribution of traits in the population, it is noticeable that a standard distribution is followed:

Example:  For a plant, the plants that are very tall are exposed to more wind and are at risk of being blown over. The plants that are very short fail to get enough sunlight to prosper. Therefore, the plants that are a middle height between the two get both enough sunlight and protection from the wind.

Directional Selection  

This type of natural selection occurs when selective pressures are working in favour of one extreme of a trait. Therefore when looking at a distribution of traits in a population, a graph tends to lean more to one side:

Example: Giraffes with the longest necks are able to reach more leaves to each. Selective pressures will work in the advantage of the longer neck giraffes and therefore the distribution of the trait within the population will shift towards the longer neck trait.

Disruptive Selection  

This type of natural selection occurs when selective pressures are working in favour of the two extremes and against the intermediate trait. This type of selection is not as common. When looking at a trait distribution, there are two higher peaks on both ends with a minimum in the middle as such:

Example: An area that has black, white and grey bunnies contains both black and white rocks. Both the traits for white and black will be favored by natural selection since they both prove useful for camouflage. The intermediate trait of grey does not prove as useful and therefore selective pressures act against the trait.

6 0
3 years ago
Help I think it’s A.
andre [41]

Answer:

I think its B sense the ice is white it will reflect solar energy

Explanation:

8 0
2 years ago
Read 2 more answers
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