Photoreceptors convert light into signals that will be sent to your brain.
The are located in the inner part of the eye.
Answer:
B
Explanation:
Simple diffusion does not require energy: facilitated diffusion requires a source of ATP. Simple diffusion can only move material in the direction of a concentration gradient; facilitated diffusion moves materials with and against a concentration gradient.
Answer:
Molars are the biggest of all the teeth. They have a large, flat surface with ridges that allow them to chew food and grind it up. Adults have 12 permanent molars — six on the bottom and top jaw, and children have eight primary molars.
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Answer:
A tree and grass only produce oxygen, while a bird, a deer, and butterfly only produce carbon dioxide.
Explanation:
