Question

1. choose the best answer. why do animals need oxygen? to help cells in the process of breaking down food to provide the energy they need to live oxygen acts as a catalyst in living organisms to make breathing more efficient to perform photosynthesis 12) choose the best answer. why do plants need carbon dioxide? to perform photosynthesis to help roots absorb water carbon dioxide acts as a catalyst in living organisms to help cells in the process of breaking down food 13) choose true or false. a place must provide food sources suitable for organisms, water, the right temperature range, and air. true false

Explanation:

1. Animals need oxygen for cellular respiration, which is the process of breaking down food to release energy for life - sustaining processes. Oxygen is not a catalyst in living organisms in the way described, it doesn't directly make breathing more efficient in that sense, and animals don't perform photosynthesis.
2. Plants use carbon - dioxide in the process of photosynthesis to produce glucose and oxygen. It doesn't help roots absorb water, isn't a catalyst in the given sense, and doesn't help cells break down food in the way described.
3. For organisms to survive in a place, it must provide food sources suitable for them, water, the right temperature range, and air (which contains oxygen for respiration and carbon - dioxide for plants in some cases).

Answer:

1. to help cells in the process of breaking down food to provide the energy they need to live
2. to perform photosynthesis
3. True