Which of the following scenarios represents change to an ecosystem brought about by biotic factors? a. a wildfire caused by lightning striking a tree b. a flood caused by a severe storm c. a landslide caused by cattle overgrazing d. a volcano

What can be said about farmers in highly developed countries? a) they have little or no negative impact on the environment. b) they practice subsistence agriculture. c) they are able to incorporate polyculture into their farming practices. d) they utilize organic farming techniques on a regular basis. e) they rely on large amounts of energy from fossil fuels.

What processes would you expect to be key in the production of yogurt ?

Casts and mold are a type of preservation where the original material decays, leaving a mold in surrounding rock that can be filled with another sediment a. true b. false