The trunk of a tree carries out functions that are similar to the functions performed by which pair of human body systems?

How are renewable and non-renewable energy sources different? List two examples of each of these types of energy sources

What 3 types of symmetry are exhibited in animals

A patient has diabetes, a disease that causes high blood sugar levels. Which macromolecule will a dietician monitor most closely in a patient that has the disease

What take blood from the heart

What types of conditions make climate different from weather's?

An animal with long limbs, a long tail, and hand-like paws that can grab things would be best suited for which environment?

Which of the following is NOT a correct match? Select one: a. Marius: first to allow landless citizens to become soldiers b. Sulla: first general to seize Rome and name himself dictator without time limit c. Pompey: member of the First Triumvirate d.

Organisms are classified as producers or consumers according to the way they

Recent research into the biological roots of homosexuality has focused on

Which of the following is a result of burning fossil fuels for energy? A. acid rain B. all of the above C. increased carbon dioxide levels in the atmosphere D. production of electricity