The nucleus is particularly important among eukaryotic organelles because it is the location of a cell's DNA. Two other critical organelles are mitochondria and chloroplasts, which play important roles in energy conversion and are thought to have their evolutionary origins as simple single-celled organisms.
vasodilatation causes a decrease in blood preasure so the answer is (B)
Do you mean how can you tell a person's blood type?
If so....
You can determine a person's blood type by a test called ABO typing which is a test that takes your blood sample which is than mixed with antibodies against type A and B blood. Then, the sample is checked to see whether or not the blood cells stick together. If it does stick than it means the blood reacted with one of the antibodies which is than your blood type. If both clump up and stick together than that means. a person can have Type O blood which contains both types of antibodies.
Grasslands are describe as lands by grasses rather than extensive shrubs or trees and include the savanna and temperate grasslands.
<h3>How savannas different from grasslands?</h3>
The grass in the savanna is yellow and dried for the biggest part of the year, there's also lots of shrubs, and also small communities of trees that are on certain distance from one another.
The grass in the grasslands is green for the biggest part of the year because there's much more rain which is also better distributed throughout the year. This also allows lots of flowers and herbs to grow in the grasslands, thus making it have a nice spectrum of colors in between the greenness.
Thus,Grasslands are descibed as lands conqured by grasses rather than big shrubs .
To learn more about savannas click here:
brainly.com/question/23270360
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Only toms idea could be scientific since it is testable, can be tested by others, have a hypothesis, and be proven
