1. which of the following is true for all the animals in the suborder pinnipedia
a. they have external ears
b. they come out on land to rest, breed and give birth
c. they have two large air pouches on sides of their neck
d. they walk on land
2. which of the following is a characteristic that sea otters stay warm in cold pacific waters?
a. a thick layer of fur
b. wrapping themselves in kelp
c. swimming fast to generate heat
d. a thick blubber layer

Which of the following scenarios is an example of the bottleneck effect? answers a in south africa, much of the afrikaner population is descended from a small number of dutch colonists. in this population, this is an unusually high frequency of pseudoxanthoma elasticum (pxe), an elastic tissue disorder. b four white-tailed deer are introduced to a park in finland. thirty years after their introduction scientists compare the genes in the population and find that there is no variation. c during the industrial revolution, london's air became filled with soot. as a result, birds started eating more of the lighter moths because they were easier to spot than their darker counterparts. over time, the moth population changed so that there were more darker moths than lighter ones. d 10% of the population of american alligators in an area have the recessive trait albinism. a massive flood results in the death of 80% of the population. of the remaining population, 60% have the recessive trait of albinism.

What is the similarities and differences between bacteria and eukaryote?

Identify the examples in which sam interacts only with natural resources