Answer:
The color of these corn kernels is due to exposure of sunlight.
Explanation:
The corn kernels stay yellow if they are not exposed to sunlight and turn red when they are exposed to sunlight.
<span>The
scanning electron microscopes allows you to view three dimensional
picture of the sample. You could see all the different outer structures
on the base of each sample.</span>
The answer is B I am positive that’s correct
Answer:
The correct answer is - option a. It should be testable in a valid period of time
Explanation:
A thought that presents a temporary clarification about a phenomenon observed by a scientist is a hypothesis. The fundamental highlights of a good scientific hypothesis are: testability and falsifiability
A testable scientific hypothesis should answer the logical question. This is one that can be checked valid or bogus utilizing the information gathered or the experience gained.
a good scientific hypothesis must be testable and falsifiable. We should have the option to test the hypothesis utilizing the techniques for science and in the event that you'll review Popper's falsifiability rule, it must be conceivable to accumulate proof that will disconfirm the theory on the off chance that it is surely false.
Thus, the correct answer is - option a. It should be testable in a valid period of time
Answer:
The correct answer is: As ventricular systole start, the AV valves are closed and the semilunar valves are closed. Because the ventricles are contracting and both valves are closed, pressure increases rapidly leading to ejection.
Explanation:
The heart functions like a bomb that pumps blood to every part of the body, which is fundamental for the proper function of every organ.
The cardiac cycle has two main phases: the diastole and the systole. During the diastole, blood returns from the body through the vena cava and is deposited in the right atrium of the heart. When the pressure in the right atrium becomes bigger than the pressure in the right ventricle, the tricuspid valve opens and the blood flows to the left atrium.
During systole, the atria suffer a depolarization that makes the atria's muscle contract. Thanks to this, the blood goes through the atria to the ventricles.
During isovolumetric contraction, the ventricles contract but the pulmonary and aortic valves remain closed. When the ventricular muscle contracts, the semilunar valves open.