Which of the following describes the relationship between elements of an ecosystem?

a. elements of ecosystems are mutually dependent on each other
b. there is no relationship between elementa within an ecosystem
c. abiotic elements are dependent on each other, while biotic elements are not dependent each other
d. a cause and effect relationship is limited to abiotic elements only

Why is the price of rice so important? a. rice prices must be kept within reach of the poorest peopleb. rice prices must make a large profit or no one will grow itc. rice prices impact the cost of fruits and vegetables on neighboring farmsb. rice prices have no real importance other than to large corporations

Which of the activities listed below could limit global warming by slowing the increase in atmospheric carbon dioxide levels? view available hint(s) select all that apply. a. replacing fossil fuels with nuclear energy b. burning vegetation to clear land for agriculture c. limiting soil erosion so organic matter takes longer to decompose d. choosing a fuel-efficient car, or bicycling to school or work e. using more electrical appliances and cars f. cutting down forests to build houses

The primary agent of contact metamorphism is