Which type of rock is formed when layers of rock particles, carried by wind and water, are compressed and cemented together?

One statements is an example of a scientific observation. another statement is an example of a scientific explanation. identify the correct statement for each category to illustrate how scientific explanations are inferred from scientific observations.

In this experiment, the was intentionally manipulated. it is the independent variable. the dependent variables that were measured were the

Which kind of worm has a closed circulatory system? a planarian b fluke c pinworm d an earthworm