Answer:
C
Explanation: Because to grow plants need the basic stuff like water and sunlight but in the desert you have a great amount of sunlight but you have much water.
Answer: A
Van Helmont concluded that most of the mass the plant gained had come from water.
Answer:
<em>The correct answer is the option on the upper right .</em>
Explanation:
Aquatic birds that require fresh water to thrive need to be around a source of fresh water. The wetter island has more fresh water than the drier island. This means that both island will be occupied from a population of zero, to an optimum stable population, which is indicated as the graph moves from zero to its maximum point, and then levels out. Th drier island will have the same pattern of curve, but will only be able to support a much smaller population, which is why the curve for the drier island is less than that of the wetter region.
The more acid in the lake the less fish that will live there.
<span><span> Answer: </span>Acetylcholine</span>
Acetylcholine<span> is a neurotransmitter, which is a chemical released by the axons of a motor neuron which causes muscles to contract. It has other functions: activates pain responses and regulates endocrine and REM sleep functions. Deficiencies in acetylcholine cause muscle weakness.</span>