The answer to this is A because groups of cells do form tissues.
So the the main forces that keep the water on the surface of the planet are to do with plate tectonics. If the plates were to stop moving, the water probably would eventually be absorbed into the interior, although this process would take a very long time indeed.
Answer:
C
Explanation:
Cells are a basic unit of life and that without cells you don't exist as a living being. Also, all the other answers have a flaw in them like in question A... not all cells are the same size. For question B and D... not all cells have the same, parts or organelles since for plants they have chloroplast while animals don't. Eukaryotes have membran- bound organelles and a nucleus while... a Prokaryote doesn't etc...
Answer:
The correct answer is option D. "Null hypothesis".
Explanation:
Null hypothesis is characterized by stating that there is no difference between the specified populations, which is the opposite of the alternative hypothesis that states that there is a difference between the populations. Since the hypothesis included in the question states that "There will be no difference in the number of adverse events...", it is concluded that is an example of null hypothesis.