As the degree of environmental heterogeneity of a community increases, the number of plant and animal species tends to
A) decrease.
B) remain the same.
C) increase.
D) increase initially and then decrease.
C
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Sitting in the sun on a hot day, a dog starts to pant and finally gets up and moves into the
shade. These activities help the dog maintain a constant body temperature; thus, this is an example of what process found in all living organism?
a. energy acquisition b. reproduction c. homeostasis d. evolution
Which of the following genetic diseases involve defects in DNA repair, which affects cell division?
A. Gaucher disease and Werner syndrome B. Kearns-Sayre syndrome and progeria C. Progeria and Werner syndrome D. Gaucher disease and cystic fibrosis E. Progeria and Werner syndrome
How many chromosomes did you inherit from your father?
A) 2 B) 23 C) 24 D) 46
Which hormone prevents a seed released in the fall from germinating immediately?
A) auxins B) abscisic acid (ABA) C) gibberellins D) ethylene