Answer:
C-None of these are found in an observational study
Explanation:
(A.) controlled variables are a part of what's found in a controlled experiment. (B.) manipulated variables are a part of what's found in a controlled experiment. (C.) Answer choice A. or Controlled variables, Answer choice B. or Manipulated variables, and Answer choice D. or Control groups are a part of what's found in a controlled experiment. (D.) Control groups are a part of what's found in a controlled experiment. Therefor this only leaves one answer and that answer is Like I said C-None of these are found in an observational study.
Answer:
Mitochondria - Nuclei - Cytoplasm
Explanation:
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Arsenic has a more metallic behavior than antimony because arsenic's atoms have fewer electron shells.
Answer: When energy is available, a cell can store small amounts of it by adding a phosphate to form ATP. The addition of the third phosphate stores energy. When the cell needs energy, the third phosphate is removed which releases energy. This energy is used in the cell to do work.
Explanation:
