--------------- is the evaporation of water from a plant's leaves

• Transpiration

• Storage

• Water absorption

• Nutrient evaporation

How do animals get nitrogen that is stored in the soil?

• Animals do not take in the nitrogen stored in the soil.

• Bacteria change the nitrogen into a gas that the animals breathe.

• Plants absorb the nitrogen from the soil and animals can eat the plants.

• The animals can eat the soil and absorb the nitrogen through their digestive system.

Energy and other materials from dead organisms are recycled back into the soil by ---------------

• producers

• herbivores

• omnivores

• decomposers

An animal who hunts and kills its own food is called a(n) _____.

• predator

• scavenger

• producer

• omnivore

How do decomposers help plants?

• They help with photosynthesis.

• They enrich the soil.

• They provide oxygen.

• They hold water.

Mr. Ahmad's science class learned that green plants use sunlight, water, and carbon dioxide to make their own food and release oxygen in the process. How can the class explain how animals complete the oxygen-carbon cycle.

• Animals take in the oxygen, but do not release gas as they use energy.

• Animals take in carbon dioxide and use it to make food.

• Animals take in oxygen and release nitrogen as waste.

• Animals take in oxygen and as they use energy, carbon dioxide is released as waste.

Which of the following is not an abiotic factor?

• rocks

• air

• animals

• water

Where does the water go when water evaporates from a puddle on the street?

• It goes into a nearby river or stream.

• It sinks into the street.

• It rises into the atmosphere.

• It goes into outer space.

The main job of the --------------is to take in nutrients and water from the soil.

• Leaf

• Stem

• Root

• Flower

People can help nature recycle plant material by composting. People use compost in their gardens. How does placing compost in your garden improve the natural environment?

• It makes the soil harder.

• It makes the soil unusable.

• It helps keep insects away.

• It makes the soil rich in nutrients