In evolutionary history, the first animals to successfully invade land from the sea were an animal with a hard outer skeleton and jointed limbs.

Describe the relationship between isotonic solutions, equilibrium, and water movement into and out of a cell.

Put each tile to the correct location. categorize each term as something that is typical of a scientific theory, a scientific hypothesis, or both. 1) scientific theories 2) both 3) scientific hypothesis a). a tentative statement used to guide scientific investigations b). makes predictions about future events c). can be tested many independent researches d). based on observations of natural phenomena e) . a well-established highly reliable explanation

Why is there more biomass at the producer level that at the consumer levels ? how does this relate to the 10% rule ?