In the video Don’t Panic, Hans Rosling talks about wealth distribution in the world. Which areas of the world moved out of extreme poverty and changed the “camel world” of 1973 to the “dromedary world” of 2010? (Choose the best two)

In a tide pool, 15 species of invertebrates were reduced to eight after one of the predatory species was removed. The species removed was likely a(n):

In the equation dN/dt = rN, r is a measure of the population’s intrinsic rate of increase. It is determined by which of the following? 

______________ or density-independent selection, selects life history traits that maximize reproduction.

Which of the following can contribute to density-dependent regulation of populations?

Tree sloths feed on leaves and buds, which are digested by bacteria that inhabit the sloth’s large stomach. While in a tree, the sloth is difficult for predators to find because it is tinted green from the cyanobacteria that live in its fur. A variety of nonbiting insects also live in the fur, but they appear to have no effect on the sloth. Based on this information, one can say that the sloth has mutualistic interactions with which organisms?

Though most herbivory involves an antagonistic interaction (i.e., one species benefits, the other is harmed), some herbivorous interactions do not. Which example is least likely to be an antagonistic interaction?

___________ carriers are those who continue to harbor a pathogen such as hepatitis B virus or Salmonella typhi, the causative agent of typhoid fever, for months or even years after their initial infection.

SARS COV 2 has been documented as spilling over into all of the species listed EXCEPT:

Which example is a mutualistic interaction?