What evidence supports the scientific theory that continents on Earth were at one time a part of a large supercontinent called Pangaea before they drifted apart?
A. Sediments found along the coasts of continents often were transported there by wind or moving water.
B. The plants and animals that live on the same continent can often look very different from their fossil ancestors.
C. The fossils of some kind of organisms can only be found
in one location on Earth.
D. In several locations, the shape of one continent matches the shape of a nearby continent, like puzzle pieces.

Turtle hatchling survivorship rate is low in many turtle species due to predation. amanda researched the predatory rate on a species of turtle eggs in the red river. the eggs were harvested from trapped turtles and the egg's cloaca film (reproductive discharge) was either washed off or left on once gathered. research suggests that predators use the female's cloaca scent to locate the eggs. the eggs were only handled when wearing gloves and then reburied along islands where the turtles were trapped. the nests were monitored by cameras and manually on foot and data on nest predation were recorded. a. based on the experimental design, what is the dependent variable? b. based on the experimental design, what is the independent variable? c. based on the experimental design, what is the control?

What is thought to have caused the mass extinction at the end of the cretaceous period?

What was the land like over 500 million years ago? what was under the sea?