A: In a lab a scientist measures the height of roses that received different fertilizers.
An experiment must include variables. The other three are just measurements, but since the scientist is varying the types of fertilizers used, this better describes an experiment. It is also done in a controlled environment (in a lab) which helps to eliminate other uncertainties.
Answer:
Hello, There! Thanks for asking your Question.. Your answer is below
B. melting point Is The most Correct Answer
Explanation:
The Melting point is the temperature at which a solid is converted to a liquid.
Therefore, making your Answer option B.
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Answer:protection from other predators.
Explanation: the quills will stick into a predator that attack the porcupine Note: it does NOT shoot its quills
Answer: B-cells fight bacteria and viruses by making y-shaped proteins called antibodies, which are specific to each pathogen and are able to lock onto the surface of an invading cell and mark it for destruction by other immune cells. C-cells are a virus-bound antibody that binds to receptors, on the surface of phagocytic cells and triggers a mechanism known as phagocytosis, by which the cell engulfs and destroys the virus.
Explanation: sorry this answer was not simple at all -_-
The reason that plants tend to have larger leaves on the forest floor is because the leaves need to capture more sun.
By increasing the surface area of the leaf, which also increases the amount of sun it collects, it can compete with the larger trees and vines when it is exposed to less sun due to said trees.
