During a "leap year" we add an extra day to our calendar because:

A. The Earth takes 24 hours to rotate

B. The moon takes 27.3 days to orbit

C. Earth takes 365.5 days to revolve

D. The moon takes 29.5 days to orbit

Which of the following is NOT a characteristic of animals? (1) All animals have a definite shape. (2) All animals are many-celled. (3) All animals use energy. (4) The cells of all animals have nuclei and organelles.

Ap bio definition of primary productivity

What happens during g1 phase

Carbohydrates and fats both

What would happen if jaguars went extinct?

Carbohydrates are composed of which three elements

4. What is a physical or mental representation of an object or an arent? a theor a hypothesis a model a scientific lair

The Hematodinium parasite becomes less of a problem for the blue crab when A-the crab is very young B-fishing is thriving in the region. C-the crab moves to less salty water. D-a significant percentage of the population is impacted.

Homeostasis is classified under which of the following A. Cell respiration B. Transcription C. Cell regulation D. Photosynthesis

A ball, with a mass of 10 kg, is dropped from the top of a building, from a height of 20 meters. Explain what will happen to the potential energy if the 10 kg mass is replaced with a mass of 40 kg and the height of the drop remains constant.