15. A student is identifying food chains in an ecosystem. Which of the following organisms might be a tertiary consumer?
A. frog
B. redwood tree
C. great white shark
D. athlete's foot fungus

C. great white shark

Explanation:

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This is a protest

People who ask questions and need our help. You know some people answer for points. They just want points and don't give us the correct answers. I asked a question twice, and people just wanted the points. ARE WE GOING TO LET THEM DO THIS. This website is for people who need help. Some people do ask questions bc they dont want the points, and people answer it. I'm not talking about them. Im talking about when someone really needs our help. If this question gets deleted, ill make another one, and another one. Try to stop me. But this is unfair.WE WILL NOT SIT BY WHILE PEOPLE ARE BEGGING FOR HELP, AND PEOPLE ARE LAUGHING ABOUT IT WE WILL DO THIS UNTIL WE GET WHAT WE HAVE DESERVED

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.