the eggs and larvae of marine animals tend to require water with more dissolved oxygen in it than the adults do. if water flows from a freshwater source into a salt water bay, what effect would this have on the population of marine animals? (2 points)

select one:

a. the freshwater would decrease the populations of marine animals because it would deplete the salt water of oxygen.

b. the freshwater would decrease the populations of marine animals by decreasing both salinity and oxygen levels.

c. the nutrient-rich freshwater would encourage algal blooms, thereby increasing the levels of oxygen and marine animals. (incorrect)

d. the freshwater would increase the populations of marine animals because it holds more oxygen than the salt water.

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.

Where substance is produced during cellular respiration

Describe how a non-resistant staphylococcus aureus bacterium can produce a bacterium that is resistant to methicillin