If seasons cause change to ecosystems, then what is something that changes an ecosystem? Answer choices: - seasons - herbicide - animals - Pesticides - flooding - wind - influenza - climate
seasons

If clams feed on plankton and nonliving organic matter, then what feeds on plankton and nonliving organic matter? Answer choices: - sharks - density - clams - spiders - gills - seaweed - animals - fungi
clams

If making cardboard from newsprint has a positive impact on the environment, then making cardboard from what has a positive impact on the environment? Answer choices: - newsprint - bamboo - animals - heat energy - earth - less water - sunlight - an object
newsprint