All of the following patterns were witnessed by darwin except that species vary a. within very short spans of time. b. around the world. c. locally. d. over time.

This aquarium exhibits biotic and abiotic factors in an aquatic environment. one of the abiotic factors is

The picture shows a fishing technique called trawling. how might trawling affect marine biodiversity

The fruit of a certain plant is sweet and fleshy. the seeds of this plant have a seed coat that is fairly tough. the seeds germinate better if they are exposed to acid, or scarification. what is the most likely type of dispersal for this seed? water animal wind