Which below is an adaptation that favors the survival of an organism?

a. proteins expressing color in butterfly wings mutate to improve camouflaging abilities of butterflies

b. lengths of beaks in a bird population increase to the point birds can no longer groom themselves

c. a ground squirrel population in the forest develops webbed feet for swimming

d. a desert coyote population loses the ability to cope with low water conditions

Bisphenol a (often called bpa) is a chemical found in products that people use every day, from water bottles to food containers to children's toys. unfortunately, bpa leaches out of its many products and makes its way into our bodies. what are the health effects of bpa exposure? ongoing research is finding that elevated exposure to bpa can affect a wide variety of developmental and physiological processes, but one of the first studies of bpa's health effects came about because of a simple mistake in the lab. at a laboratory at case western reserve university in 1998, geneticist patricia hunt was making a routine check of her female lab mice. as she extracted and examined developing eggs from the ovaries, she began to wonder what had gone wrong. she noticed that many of the eggs showed problems with their chromosomes, and some had irregular amounts of genetic material, which can lead to miscarriages and birth defects in mammals. she learned that a lab assistant had mistakenly washed the plastic mouse cages and water bottles with a harsh soap, releasing bpa from the plastic. knowing that bpa is an endocrine disruptor, a chemical that can enter organisms and mimic hormones, hunt set out to discover whether it had adversely affected her mice.

When listening the levels of orginization in orginisims from the smallest to most complex , which level is just below organs in complexity

How does the carbon cycle involve an exchange of carbon