The human population may reach 12 billion people by the year 2100. Applying your knowledge of energy flow, suggest the feeding habits necessary to support this large number of people
What will be an ideal response?
The best responses should include a discussion of eating lower on the food chain. As energy flows through an ecosystem, a global average of 90% of the energy in food is lost at each trophic level. Therefore, more people can be fed if they eat vegetation (producers), instead of feeding the plant material to animals and then eating the animal. This does not mean everyone needs to become a vegetarian. It simply implies that we can feed more people on this planet if people feed lower on the food chain.
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Which of the following is NOT a correct match?
a. hydrosphere; ice caps b. lithosphere; airborne particles c. atmosphere; gases d. hydrosphere; rivers e. lithosphere; Earth’s crust
As filtrate passes through the descending limb of the loop of Henle, water passes _____ the nephron and some solutes pass _____ the nephron.
A. out of, out of B. out of, into C. into, out of D. into, into
Which statement about kudzu is FALSE?
A. It was imported from Asia for erosion control and forage. B. It was originally introduced into the Pacific Northwest. C. It is an exotic species. D. It grows over most anything stationary in its path. E. It is a vine.
Why do physicians often examine the lymph nodes of cancer patients?
What will be an ideal response?