<h2>
<u>Answer:</u></h2><h3><u>Groups were fighting against </u></h3>
Oil spills, polluting factories and power plants, raw sewage, toxic dumps, pesticides, freeways, the loss of wilderness and the extinction of wildlife
The right atrium<span> is one of the four chambers of the heart. The heart is comprised of two </span>atria<span> and two ventricles. Blood enters the heart through the two </span>atria<span> and exits through the two ventricles. Deoxygenated blood enters the</span>right atrium<span> through the inferior and superior vena cava</span>
Answer:
Analyzing Scientific Data
Science is all about collecting data. If we look at the definition of science, we can say that science is the study of the natural world through systematic observation and experiment. That observation and experiment is where you collect the data.
Explanation:
Answer:
Magnification is the ratio of <u>enlargement and reduction</u> of an image
Explanation:
Magnification is the way of enlarging the apparent size of an object. When the magnification of an object is less than 1 it shows reduction in size while when it is greater than 1, it shows enlargement in size. Mathematically, it is given by :
i.e. 
Hence, the correct option is (c) " both a and b " i.e. " enlargement and reduction ".
