Answer:
a- black powder
Explanation:
it is powder and has no pigment
<h2>Availability of Plankton</h2>
Explanation:
- The term plankton comes from the Greek derivative planktos, meaning wandering. Organisms in this group spend either part or all of their life in a drifting state, with no ability to swim against a current. Most have little or no ability to swim at all. Though some are larger, most planktonic creatures are microscopic and make up the bottom of the food chain in aquatic environments
- Plankton can be divided into two categories: phytoplankton are those organisms that are plant-like, and zooplankton are organisms that are animal-like. Interestingly enough, many planktonic species are neither plant nor animal but are creatures that belong to the kingdom Protista
- Zebra muscles are found in water bodies which attached to pipes and other surfaces of water supply to impliment the availability of plankton
Answer: Your brain constantly gets signals from your body which detect the amount of oxygen and carbon dioxide in your blood. Your brain will send signals to the muscles involved in breathing and adjust your breathing rate depending on how active you are.
HOPE THIS HELPED HAVE A WONDERFULL DAY!
The optic nerve swelling as it enters the eye through the optic disk is known medically as papilledema.
<h3>What results in eye papilledema?</h3>
Increased pressure from the brain and CSF on the optic nerve causes papilledema. The nerve swells as a result of the pressure as it enters the eyeball at the optic disc.
<h3>What causes papilledema most frequently?</h3>
The most frequent causes of papilledema without IIH were cerebral venous sinus thrombosis, intracranial tumor, and intracranial hemorrhage.
<h3>What occurs when a person has papilledema?</h3>
The following list of papilledema symptoms is possible: loss of vision or blurred vision The optic nerve, which regulates your vision, is subjected to physical pressure as a result. Blurred vision or visual loss in one or both eyes are common symptoms of optic nerve compression.
learn more about papilledema here
<u>brainly.com/question/15197155</u>
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