Answer:A checkpoint is a stage in the eukaryotic cell cycle at which the cell examines internal and external cues and "decides" whether or not to move forward with division.
Explanation: Easy Peasy
Answer:
A plant and animal cell both have a plasma membrane, ONLY a plant cell has a cell wall. Both of them have cytoplasm, a nucleus to guide them on what to do and ribosomes to produce protein. Only a plant contains a large vacuoles to store water and have chloroplast to do photosynthesis.
Explanation:
B. hydrosphere
Why? The hydrosphere contains all the waters on the earth's surface, including atmospheric moisture, such as clouds.
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The answer is geological pick.
Comparative and experimental investigations are two of three scientific investigations, the other is descriptive investigations.
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