Newton proved that the force that causes, for example, an apple to fall toward the ground is the same force that causes the moon to fall around, or orbit, the Earth. This universal force also acts between the Earth and the Sun, or any other star and its satellites. Each attracts the other.
Answer:
The answer you are looking for is B. The gravitational pull of the moon
Explanation:
The moon influences tides the most. The moon's gravitational pull on the earth is strong enough to tug the oceans into bulge
The part of plants that serves as anchorage is the root.
<h3>What anchors plant?</h3>
Plants can grow on different media ranging from soil, rocks, to water.
The primary organ that anchors plants to these growing media is the root.
Plant roots also serve to conduct mineral nutrients and water from growth media to the body of the plants.
More on plant's roots can be found here: brainly.com/question/8647279
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B. tears , this is not a first line of defense
D) no change in cardiac output, increased heart rate, decreased stroke volume occurs after blood donation
Explanation:
When a person donates blood, there is a slight loss of blood volume or hypovolemia. This triggers the baroreceptors of the blood; although does not trigger the osmoreceptor.
The baroreceptor responses are according to the arterial pressure which rises momentarily and results in increased sympathetic activity with decreased vagal activity.
These changes will lead to vasoconstriction, reduced stroke volume, increased heart rate or tachycardia which helps to maintain the cardiac output.
The soreness at the venepuncture site on the skin is due to bruising which is common after any needleprick. applying cold pack, elevating and resting the arm.
In order to compensate for the fluid volume loss and avoid dehydration, one must take plenty of fluids before and after blood donation.
