Question

a the plants and animals receive oxygen from the sun, water, and air. b the water and air recycle to help the sun provide energy to plants and animals. c the sun, water, and air provide necessary resources to the plants and animals. d the animals provide shelter for the plants, enabling them to grow. a b c d

Explanation:

• Option A: The sun does not provide oxygen. Plants produce oxygen through photosynthesis.
• Option B: Water and air do not "recycle to help the sun" in this context. The sun's energy is independent of water and air recycling in terms of providing energy to plants (via photosynthesis) and animals (indirectly).
• Option C: The sun provides light energy (for photosynthesis in plants), water is essential for various biological processes in plants and animals (e.g., as a solvent, for transport of nutrients), and air provides gases like oxygen (for respiration in animals and plants - plants also use carbon dioxide for photosynthesis).
• Option D: Animals do not typically provide shelter for plants in a general ecosystem context. Plants can provide shelter for animals (e.g., trees for birds), but the reverse is not a common or major relationship.

Answer:

C. The sun, water, and air provide necessary resources to the plants and animals.