I believe the answer is answer D- Nuclear decay rates are constant.
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Lets say that there is an disease or infection on a certain species, if the community was not very diverse then that whole species will be effected because they are all alike. This can lead to an extinction of that species which then leads to the a possible collapse in the community due to the change in food webs.
More diversity equals to more stability because these risks have a fewer chance of happening.
I hope all of that makes sense(;
Shelter
Have a great day.
Answer:
The digestion starts with the buccal cavity or mouth by chewing the food. Teeth break the ham and cheese sandwich into small and digest the starch present in the food with help of the amylase enzyme present in saliva. The small chewed particles of food mixed with saliva called bolus move to the stomach.
In the stomach, there is HCl acid present that killed any harmful microorganism present in the bolus and digests the protein present in the ham and sandwich by pepsin enzyme secreted by the parietal cells of the stomach.
Lipase digest fat present in the cheese of sandwich by gastric juice. Small intestine digest fat by lipase protein by protease and carbs by amylase.
Absorption takes place in the small intestine that contain numerous villi’s projections in the cell lining for absorption in the small intestine.
I would say it's A because the others don't make sense and if they were curved they wouldn't get as much sun