The carrying capacity of the Earth for humans is influenced by
A. food and energy supply.
B. disposal of waste products.
C. interaction with other organisms.
D. All of these answers are true.
D. All of these answers are true.
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Fungi with hyphae _____
A) acquire their nutrients by phagocytosis B) have a body plan that is a unicellular sphere C) have cell walls that consist mainly of cellulose microfibrils D) are adapted for rapid directional growth to new food sources E) reproduce asexually by a process known as budding
What can a human population's age pyramid tell you about current and future needs?
A. How many resources would be needed for health care B. How many workers will be needed to support retirees C. How many schools to build or to close down D. All of the above
Many researchers hypothesize that modern humans have derived from the Homo ergaster populations that spread around the world starting about 2 million years ago. This hypothesis is known as the:
A. out-of-Africa hypothesis B. into-Africa hypothesis C. multiregional hypothesis D. uniregional hypothesis E. None of the answer options is correct.
Who originally identified a highly condensed structure in the interphase of nuclei?
A. Lyon B. Barr C. Ohno D. None of the answers are correct