Aperson lets go of a hammer. why does it fall?

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.

When fossil fuels are burned, carbon dioxide is released. how does this gas impact the environment?

Which is abiotic? a. tree sap b. insect c. sunlight d. wood table