18. have a nice day hope it helps.
Answer: B. An experiment that directly tests the hypothesis
Explanation:
Yasir didn’t really test his experiment he only ask people for the opinion on which color they like so he forget to actually do the experiment therefore the answer is b.
Answer:
Element
Explanation:
Because elements can be made with only one atom the rest of the answers cant be
Answer: 50%
Explanation: 50% or more of plant and animal species on Earth are found in tropical rainforests.