I am not 100% sure but I believe that because of increased manufacturing, the air got very polluted and this made many trees darker, like birch. So moths are usually lighter in color so many couldn’t really hide among trees and they were eaten. After some time, many moths mutated and also became darker to blend in when they were on trees to prevent being eaten by predators. In conclusion, the population decreased.
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Most invertebrates leave their young to fend for themselves while vertebrates help their young till they are ready
Answer:
Internally in the female
Explanation:
internally in the female because that's where the sperm meets the egg
Answer:
fixed action pattern, key stimulus; key stimulus, fixed action pattern
Explanation:
- An innate behavior which specific to a species and is highly stereotyped is termed as a fixed action pattern.
- This behavior occurs due to a neuronal network that is hard-wired in the species and the response is said to be generated following a key stimulus.
- A key stimulus is the one that generates a fixed action pattern and this is also called a releaser.
- A key stimulus can be in the form of shape, sound, color, or a combination of these.
- In this case, the red spot is a stimulus for the chicks which causes them to peck at their parent's bill, and hence, the red spot is a key stimulus, and pecking of the chicks is a fixed action pattern.
- The parents regurgitate the food only when the chicks peck at their bills, so pecking is a key stimulus for the parents which causes them to regurgitate the food which is a fixed action pattern.
The answer would be: right occiput anterior (ROA)
Presentation of fetus determines which part of their body that will be delivered first. Some presentation will have bigger surface area than others which could complicate the process of the labor. In this case, the baby back in on the right <span>between the midline and lateral surface of the abdomen, so the occipital area should be at the anterior of the pelvis.</span>
