Although wildfires frequently result in the destruction of large areas of habitat, they also provide opportunities for some species of pine cone-bearing trees to disperse their seeds and grow new trees. In what other way does forest life benefit from wildfires?
a. Nocturnal predators are driven away from prey.
b. Forest fires provide warmth during harsh winters.
c. Ashes are rich in nitrogen and other nutrients.
d. Smoke protects animals from harmful UV rays.
c. Ashes are rich in nitrogen and other nutrients.
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Chlorophyll b absorbs green wavelengths of light that chlorophyll a cannot absorb. In this respect, chlorophyll b acts as
A. an energizer for photosynthetic bacteria. B. a light absorber in the green light. C. a more efficient pigment. D. an accessory pigment.
Enzyme competition occurs when
A. one type of enzyme reacts with one type of substrate. B. an enzyme does not react with a substrate. C. three different types of enzymes react with one type of substrate. D. an enzyme stops a reaction.
________ are characterized by having a pseudocoelom
A) Chordates B) Roundworms C) Arthropods D) Annelids E) Cnidarians
Scientists study the genomes of many different living organisms besides humans, including, for example, fruit flies, yeasts, and mice. Of what value is understanding the genes of a mouse in comparison to those of a human? Are the two even remotely
comparable? What will be an ideal response?