Answer: A
Explanation: There is no need to conduct and experiment if you already know the answer
Answer: Option C
Explanation:Fungi thrive on other organisms in order to grow unlike the plants in which they make their own food. Hope this helps! :)
The answer would be C. because velocity describes the speed of an object in any given direction
The immune system, and the excretory system
(Honestly, all of them work to keep us 'healthy', but I believe these are the ones you're looking for)