Based on the weather conditions described, which planet would be the worst?

When you run, you begin to breathe heavier and faster. your heart beats more quickly, bringing more oxygen to your cells. which organ systems are working together here?

In the diagram below, which organelle is a ribosome, which combines amino acids and produces proteins? оооо

The footprint of a dinosaur and the burrow of an ancient shrimp are examples of which kind of fossils a.body b.amber c.trace d.index