Paranthropus robustus and Australopithecus africanus are always found in the same deposits

a. true
b. false


Answer: b. false

Biology & Microbiology

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Once human nerve cells become mature, they normally exit the cell cycle and remain in ____

a. G0 b. G1 c. G2 d. S phase e. prophase

Biology & Microbiology

Root formation in stem cuttings can be improved by

the application of a. synthetic auxins. b. abscisic acid. c. salicylic acid. d. citric acid. e. nitric acid.

Biology & Microbiology

The number of trophic levels an ecosystem can support is driven by (select all that apply)

A- The amount of energy available (primary productivity) B-The speed of nutrient cycling (decomposition) C- The population size of top predators in the ecosystem D-The efficiency of energy transfer across trophic levels E- The composition of the plant community

Biology & Microbiology

In the chloroplast, sugars are made in a compartment that is filled with a thick fluid called the

A) stomata. B) thylakoid. C) matrix. D) stroma.

Biology & Microbiology