Well, this is called echolocation. It is possible because the animals make noise, and it bounces off objects and plants. Their brain takes the sound waves that bounce off objects and register it into their brain at another way of seeing. They can see up to 200 miles away with this, and other animals can hear these noises from far away. I hope this answer cam to your desired help.
Answer:
YES
Explanation:
As g ∝ 1/d² between two two components, further potential difference would result in lower gravitational pull. So the influence of gravitational pull among them also reduces as two things are isolated from the others.
Answer:
Alpha-1
Explanation:
Adrenergic receptors are the integral proteins present in the postsynaptic plasma membranes. These receptors are activated when the neurotransmitter norepinephrine and the hormones norepinephrine and epinephrine bind to them. The alpha 1 adrenergic receptors are found in the smooth muscle fibers of blood vessels that serve the salivary glands, skin, and kidneys. These receptors are also found in the radial muscle of iris of the eye as well as in the sphincter muscles of the stomach and urinary bladder.
They exert excitatory effect and lead to contraction of smooth muscles of the blood vessels, dilation of pupil, and closure of sphincters of the bladder.
There are valves in the vessels that prevents backflow, just like in the viens. ... the lymph vessels to ensure that the flow of lymph
Pretty sure its Ph scale i did a question like this once but i cant remember....its either Ph or richer