Which of the following most likely supports the most sustainable ecosystem? The habitat with the warmest average temperature.

The habitat with the greatest number of consumers.

The habitat with the greater number of green plants.

The habitat with the greatest variety of living things.

Use the drop-down menus to label each of the following changes p for physical change and c for chemical change.

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?

Which of the following does not describe a physical property of iron? a iron is silvery-white or gray in color. b iron has a boiling point of about 3,000°c. c iron is a magnetic element . d iron and sulfur react to form iron sulfide.