Which organism is the primary consumer in the following food chain? Plant Caterpillar — Lizard Snake
O A. Snake
O B. Caterpillar
O c. Lizard
D. Plant

The oxidizing agent our bodies use to obtain energy from food is oxygen (from the air). if you breathe 15 times a minute (at rest), taking in and exhaling 0.5 l of air with each breath, what volume of air do you breathe each day? air is 21% oxygen by volume. what volume of oxygen do you breathe each day?

Differences between compact bone and cartilage

What causes temperature extremes in the desert