The immune system<span> is the body's defense against infectious organisms and other invaders. ... One of the </span>important<span> cells involved are white blood cells, also called leukocytes, which come in two basic types that combine to seek out and destroy disease-causing organisms or substances.</span>
The function is <span>ATP (Adenosine triphosphate) ATP is a nucleotide that performs many essential roles in the cell. It is the major energy currency of the cell, providing the energy for most of the energy-consuming activities of the cell.</span>
D) A black sweaters. Darker colors are more absorbent to light and heat than light colors, which is why light colored clothes are also better to wear during the summer.
The correction option is VENTILATE THE AREA.
In order to reduce indoor air pollution, the best thing to do is to ventilate the area. Ventilation involves provision of fresh air into a room in order to flush out and eliminate indoor pollution.
Groundwater contamination occurs when man-made products such as gasoline, oil, road salts and chemicals get into the groundwater and cause it to become unsafe and unfit for human use. Materials from the land's surface can move through the soil and end up in the groundwater. That is why pollution can contaminate an aquifer.
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