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which of the following experimental conditions ensure that mendel would get accurate results in his experiments on pea plants?
a. he used true-breeding, it “pure bred” plants.
b. he observed only traits that had two forms such as tall and short.
c. he physically controlled the breeding of the plants.
d. all of the above

Average annual precipitation and are the two major features that define the biomes on earth.

Students in biology are studying the macromolecules of life. they used a calorimeter to determine the calories in various types of food. once the lab was completed, the students ate the left over food samples. monica commented that in just 6 or 7 "chews" of the saltine, it was gone; nothing but a sticky paste in her mouth. elaborate on what happened chemically while chewing the saltine. include the macromolecules present.

This is the main structural axis of the plant that supports leaves, flowers and fruits; transports fluids; stores nutrients and produces new tissue.