Which of the following statements is true? a. the matter in an ecosystem must be continuously replenished. b. the total amount of energy in an ecosystem remains the same. c. the only way to return matter to the soil is decomposition. d. the total amount of water in an ecosystem is always decreasing.

9. wind power creates pollution. water air soil noise

Which statement describes characteristics of planarians? a they live in oceans, are parasites, and reproduce only sexually. b they live in fresh water, are parasites, and reproduce only asexually. c they live in oceans, are free living, and reproduce sexually and asexually. d they live in fresh water, are free living, and reproduce sexually and asexually.

3test questions with answers on incomplete dominance