The correct answer is - B. feathered.
The primitive mammals were very small (with a couple of exceptions), rodent-like, also very often described as shrew-like. They were feeding with plants, as well as with insects and the occasional egg. Most of them were night creatures, and they were living in the shadow of the much bigger dinosaurs.
So, they were small, furry, rodent-like, night-dwellers, but there isn't a single evidence that any of the primitive mammals, or any mammal whatsoever, had feathers.
The proper environments for Pepsin are acidic, particularly those with a pH of 1.5 to 2. Optimal operating pH for Trypsins is of about 8. It seems that the highest level of activity for the two if they were in the same environment would have to be midway between their optimum range - about pH 5.
Answer: To produce human insulin for diabetics, making better crops that have insecticides and to help the environment by cleaning up oil spills
Explanation:
I just had this question on a quiz and the other options aren’t ethical options.
Specialized gland in the endocrine system release hormones that control different bodily functions.
If the organism has no natural predators then that organism can start to overpopulate the habitat and use up valuable resources that other organisms, who DO have natural predators, need to survive and repopulate.
