Which statement describes all primary producers? a. all make energy-rich compounds that can be used by other organisms. b. all make their own food using the energy of compounds in the environment. c. all take in energy-rich compounds that were made by other organisms. d. all make their own food using the energy of sunlight.

Which of the following is the most likely result of converting forestland to urban development? a. the amount of land available for lumber production decreases. b. fewer trees are needed because cities are made mainly of concrete. c. people discover more efficient ways to grow trees. d. the price of lumber goes down.

Which example would the nurse consider to be a part of systems thinking theory?

(select all the correct choose each statement that is scientific. - the opinions of randomly selected participants in a survey prove the idea that global temperatures are not increasing on earth. - the universe's average temperature and rate of expansion support the idea that it began as one super-dense and hot mass 13.8 billion years ago. - ocean tides are caused by the uneven gravitational pulls of the moon and sun on different parts of earth. - human life is more valuable than other forms of life on earth because humans are more intelligent than other organisms.