Positive feedback cycles always increase the response. Negative feedback cycles always decrease the response.
Positive and negative feedback mechanisms always work in antagonistic fashion to maintain a homeostatic balance of a parameter such as temperatures or pH in the body. Positive feedback is akin to a gas pedal while negative feedback is akin to a brake and reverse pedal.
Explanation:
An example of a parameter is blood sugar levels. Glucagon is a hormone responsible for positive feedback since it increases blood sugars when levels are low. Insulin, however, is a negative feedback hormone that reduces blood sugars levels when they are elevated. These two work antagonistically to maintain the right sugar levels in the blood.
Learn More:
For more on feedback loop check out;
brainly.com/question/2902510
brainly.com/question/3120243
#LearnWithBrainly
Answer:
In addition to their moons, all four of the giant planets have rings, with each ring system consisting of billions of small particles or “moonlets” orbiting close to their planet. Each of these rings displays a complicated structure that is related to interactions between the ring particles and the larger moons.
Answer:
C. surface tension
Explanation:
Surface tension refers to the property of water or any liquid to enhance its surface area by a certain amount. It is a very important property of water due to which it resists any external force due to cohesive nature of water molecules.
How surface tension help needle to float on water:
It is a property of water which enhance the attractive force between needle and liquid.
The molecules on the surface of water do not have any force acting from upwards because that side is exposed to atmosphere. This causes a downward force but no upward force on upper surface,so the molecule of surface tend to stay together by forming a thin sheet or imaginary layer.
If weight of any material cannot break surface tension it will float on water surface. This is what happens with needle.Therefore, when needle is placed on water surface with alot of care in horizontal direction, it will not break surface tension and hence will float on water. Please see attached image for better understanding.
Hope it clears up the picture!
Answer:
the involuntary constriction and relaxation of the muscles of the intestine or another canal, creating wave-like movements that push the contents of the canal forward.
The correct option is A.
California Candor is a type of bird that was first discovered in California in October 1805. Then, the birds occupied a huge range and scavenge on whales found on the beach and other large sea animals. The birds were drove to the brink of extinction by human activities such as habitat destruction, uncontrolled shooting, improper eggs collection and poisoning by ranchers. By 1982, only 22 California candor remained and these were taken and put into captive breeding program in order to prevent their total extinction.
<span />
