In 1859, the English naturalist Charles Darwin published a book entitled On the Origin of the Species. One of the major ideas that was presented in his book was the theory of natural selection. What was another idea that was presented in his book? A.
Organisms that are able to readily adapt to change are more susceptible to extinction than organisms that are less adaptable.
B.
Male organisms often possess special features that make them more attractive to female organisms.
C.
Both learned and innate behaviors may be inherited by an organism's offspring.
D.
Homogeneous gene pools are preferred over heterogeneous gene pools and genetic variation.

The best way to tell its true color is to look at the minerals streak

D. peatlands,grassland,swamps

Hunting in the darksome fish rely on senses beyond sight. in the darkness of the marianas trench, a fish called the rattail has an extremely sensitive sense of smell. the fish uses scent, rather than sight, to steer toward food. once it's near food, the rattail uses a special organ on the bottom of its chin to guide itself by feel.marine snowone staple of the deep sea diet is "marine snow," flakes of organic, edible substances that sink down from the upper ocean. animals at the ocean's bottom find sustenance in everything from the bodies of dead creatures to fecal matter. marine snow is diverse enough to support numerous species. for instance, several species of snails and worms feed exclusively on deceased whales.microorganismsthe deep sea is an intricate ecosystem, and even the ocean floor itself plays a part. hydrothermal vents are cracks in the sea floor where erupting magma mixes with ocean water to produce plumes of hot, sulfur-rich chemicals. some microbes can use these chemicals for energy, sustaining their existence and that of the animals who depend on their roles in the deep sea food chain.