Why was the alga acetabularia a good model organism for joachim hã¤mmerling to use to identify the location of genetic material?
it lacks a nuclear membrane.
it self-fertilizes.
it is a large, asymmetrical, single cell easy to see with the naked eye.
it makes a protein capsid.

b.

producers: apple trees, potatoes, carrots, grains, acorns, cabbage, grass, corn, lettuce

consumers: deer, mice, rabbits, chickens, squirrels, horses, worms, cows

predators: eagles, frogs, wolves, owls

in 1859, charles darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. he defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".