The original population of brown spotted deer declined drastically after their forest habitat was flooded. after frantic efforts over three decades by the forest authorities to revive the dwindling population, it did bounce back. now the deer population is as huge as it was three decades ago, but it shows a decreased amount of genetic variations. which factor could be responsible for this microevolution?

a. bottleneck effect
b. natural selection
c. founder effect
d. gene flow

Which statement about the pancreas is not true? a. it is an endocrine organ in the abdomen. b. it release chemicals into the digestive system. c. it releases insulin to increase glucose levels. d. it release hormones into the bloodstream.

African penguins, which inhabit the coasts of southern africa, were classified as an endangered species in 2010. two significant threats to their survival are ecosystem damage from oil spills and overfishing by humans. overfishing depletes the food supply of african penguins. the best method to reduce the threat of overfishing would be to . the risk of oil spills could be reduced by increasing the use of , which should oil consumption. if an oil spill does occur, could be used to remove the oil so the ecosystem may more quickly recover.

Witch theory suggests all living things are made up of cell or cells