It prevents harmful substances from entering a cell
The DV is measured for results
Answer: Animals excrete water by respiration and by passing urine.
<span>15. Groundwater is one of our most important natural resources. It provides us with much of the water that we use for drinking water, household uses, crop irrigation, and many other things. In fact, over 1/3 of Earth's population relies on groundwater for its needs, including 99% of the rural population in the U.S.
16. I dont know this one
17. </span>One type of cavern, known as solution caverns, are formed when large portions of limestone beneath the ground disintegrate and dissolve through the action of underground water. <span>Solutional caves are the most frequently occurring caves and such caves form in rock that is soluble, such as </span>limestone, but can also form in other rocks, including chalk,dolomite<span>, marble, salt, and </span>gypsum<span>.</span>
Answer:
The nuclear reaction rate is very sensitive to temperature so that even a slight increase in temperature makes the nuclear reactions occur at a MUCH higher rate. This means that a star's luminosity increases a lot if the temperature is higher.
