Which of the following includes all the factors that add to a person's ecological footprint?
a) energy and food resources
b) energy, food, water, and shelter resources; wastes; and greenhouse gases
c) energy, food, and water resources
d) energy, food, water, and shelter resources
Answer: b) energy, food, water, and shelter resources; wastes; and greenhouse gases
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Cell theory states that ________.
A. cells come from non-cell entities B. cells can be created from sexual reproduction or from asexual reproduction C. all life is made up of cells, and cells arise from preexisting cells D. cells go through the process of cell division
A person hears a sound coming from a hole in the ground. Sometime later a groundhog is seen emerging from the hole in the ground. The person suspects that the sounds were made by the groundhog since they have witnessed this behavior before. The underlined portion of this story is best described as a(n)
A. experiment. B. hypothesis. C. observation. D. test of a hypothesis.
What do gametes, spores, and the gametophyte generation have in common?
A. They are all diploid. B. They are all haploid. C. They are present in vascular plants only. D. They are all produced by meiosis. E. They are all triploid.
Microorganisms that live in severe habitats, such as very hot, acidic or salty environments, are called
A. thermophiles. B. barophiles. C. extremophiles. D. halophiles. E. psychrophiles.