Answer;
A. the Sun's rays are nearly perpendicular to Earth's surface.
Explanation;
-Tropical region receives more solar radiation not only because the Sun’s rays hit the region more directly, but also because they travel through less of the atmosphere to get there.
-Some radiation is absorbed as it travels through the atmosphere, so less energy is lost in tropical regions.
Answer: B. y=a(x-h)^2+v
a. 3
b. 72
c. 1000
d. 20000
Every year 20,000 species go extinct. Thus, the correct option for this question is D.
Species may be defined as a cluster of organisms that can significantly reproduce with one another in nature in order to produce fertile offspring. It involves identical organisms that interbreed with one another in order to exchange genes. It is responsible for creating fertile organisms.
Species extinction is the ecological force that derives the mechanism of elimination of species from their native environment. This stimulates due to varieties of external influences like lack of food, space, mating selection, involvement of human activities, the action of predators, etc.
So, due to these external influences, it is found in research that approximately 20,000 species go extinct every year.
Therefore, every year 20,000 species go extinct. Thus, the correct option for this question is D.
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The statement that mitochondria and chloroplasts cannot survive outside of the cell is not a supporter of the endosymbiotic theory. So the correct option is A.
It's possible that eukaryotic cells originated when several cell types fused to form one. They started coexisting in what are known as symbioticpartnerships. The endosymbiotic theory describes how this may have occurred. One creature that resides inside of another is known as an endosymbiont. Your own cell and all other eukaryotic cells are animals formed of other species' components.
Both the chloroplast and the mitochondrion are organelles that were formerly free-living cells. They were prokaryotes that were ensconced within other cells (host cells). They may have become a part of the other cell by being eaten (a process known as phagocytosis), or they could have been parasites living inside the host cell.
The inner cell lived and flourished with the host cell rather than being ingested by or destroying it. It resembles a landlord and a renter in certain ways. The organelle pays rent by producing energy that the host cell may consume, and the host cell offers a cozy and secure home.
The organelle and the hostcell have developed together throughout time as a result of this long-ago event. The two are now inextricably linked. Even while they now work as a single organism, if we look closely, we can still see traces of the organelles' former lives as free-living entities.
Therefore the correct option is A.
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Answer:
mitochondria and chloroplasts can not survive outside of the cell
Explanation:
B. dehydration hydrolysis
C. catabolic hydrolysis
D. dehydration synthesis
The process that occurs when water is released (lost) during a reaction is D. dehydration synthesis.
This is because dehydration synthesis involves the removal of a water molecule in order to form a bond between two molecules. When water is released or lost during a reaction, it is a sign that dehydration synthesis has occurred.
Dehydration synthesis is a reaction in which two molecules are joined together with the removal of a water molecule. This process occurs when water is released (lost) during a reaction.
During this reaction, a covalent bond is formed between the molecules, and in the process, a water molecule is removed. This dehydration step gives the reaction its name.
In contrast, hydrolysis is a reaction that involves the addition of water to break down a larger molecule into smaller components. In hydrolysis, water is consumed or used in the reaction rather than released.
Therefore, when water is released during a reaction, it is associated with dehydration synthesis (option D).
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2.What is the radius of the colony
Answer:
the circumference is
3.14 times the diameter or
3.14 x d
since d is 8 the equation becomes
3.14 x 8 = 25.12 mm in circumference.
Explanation:
where r is the radius of the sphere;
π is a constant that is roughly equal to 3.
Calculate the surface area of a sphere with a radius of 7 meters using the simple approximation above.