<span>Chlorofluorocarbons
(CFCs) chemicals contain carbon, chlorine and fluorine and is t so expensive at
the same time it’s not flammable, the reason why it is mainly used in business
such as refrigerators and plastics. However, these chemicals destroys our
stratosphere, the second layer of the Earth’s atmosphere and protects us by
blocking the ultraviolet radiation (UV Light). This type of radiation can seep
through organisms skins and can leave destructive effects on DNA molecules
which will also cause skin cancer.</span>
Answer:
The correct answer is - tight junctions.
Explanation:
Tight junctions are one of the cell-cell junctions that make a barrier to the passage of material which is a present in epithelia. This barrier is impermeable to most of the materials with soluble molecules. This barrier is made up of the occludin and claudin proteins.
Tight epithelia have tight junctions and examples of such junctions are the distal convoluted tubule or DCT, and the collecting duct of the nephron in the kidney.
Thus, the correct answer is - tight junctions.
Answer:
1. Answer is B.
Explanation:
2. Bro this is something for the physics section, not biology.
As food becomes scarce, monkeys within the same tribe can fight for food resources. This behaviour describes intraspecific competition.
<h3>What is intraspecific interactions?</h3>
Intraspecific competition is a competition between someone from the same species . Theimpact of competition on each individual within the species relies on the type of competition that takes place.
'The competition' may be inactive or active and may result in ovarious outcomes.
Thus, This behaviour describes intraspecific competition.
To learn more about intraspecific competition click here:
brainly.com/question/17003911
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