A scientist is designing an investigation to study the impact of predatory trout on the population of the mountain yellow-legged frog in a recreational nature park. What is most likely the test variable (independent variable) for the study?

Were the first to arrive in nowth america. asian french

How many inches of snow did any of you guys get last night?

Impressions of tropical swamp plants were observed on rocks in polar regions. the impressions were dark black imprints, which means the fossils are examples of ( 1 ) the fossils tell us that polar regions ( 2 ) ( 1 ) a. carbonization b. mineralization c. trace fossils ( 2 ) a. had tropical plants that can grow in ice b. might have had a diffierent climate in the past c. will have abundent vegitation