Plants need both macronutrients and micronutrients to grow. Which chemical is a plant micronutrient?
A) nitrogen
B) iron
C) magnesium
D) sulfur
B
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For a species to be called "invasive," it must _____
I) be introduced to a new area II) spread rapidly in this new area III) eliminate native species A) only I B) only II C) only III D) only II and III E) I, II, and III
Plant cells usually divide and then increase in size
A. true B. false
Did Darwin develop his theory of evolution through experimentation or observation or other methods?
A. Experimentation. B. Observation. C. Both experimentation and observation because he collected samples but also worked experimentally with finches. D. Mathematical analysis of experimental data.
Mendel chose to study pea plants because they have a long life cycle that offers ample time for analysis
a. True b. False