Answer:
<em>c</em><em>.</em><em> </em><em>a</em><em> </em><em>f</em><em>a</em><em>c</em><em>t</em><em>o</em><em>r</em><em> </em><em>t</em><em>h</em><em>a</em><em>t</em><em> </em><em>l</em><em>i</em><em>m</em><em>i</em><em>t</em><em>s</em><em> </em><em>o</em><em>r</em><em> </em><em>p</em><em>u</em><em>t</em><em>s</em><em> </em><em>r</em><em>e</em><em>s</em><em>t</em><em>r</em><em>i</em><em>c</em><em>t</em><em>i</em><em>o</em><em>n</em><em>s</em><em> </em><em>o</em><em>n</em><em> </em><em>a</em><em> </em><em>d</em><em>e</em><em>s</em><em>i</em><em>g</em><em>n</em><em>.</em>
Explanation:
constraint - a limitation or restriction.
Answer: ozone concentration
Explanation: The Dobson Unit is the most common unit for measuring ozone concentration. Becuse ozone concentration is hard to measure they use The Dobson Unit.
Answer:
Describe two desert animals and the adaptation that help them survive?
Camel and Donkey
Explanation:
Both animals have two different types of stomach that enables them to store water for a very long time and makes them withstand drought
It's called hypoxemia, it's low levels of oxygen in the blood, to be more specific, it's oxygen loss in your blood from your arteries. It can cause respiratory disorders, and tissue hypoxia, as a result of the blood not providing much oxygen to your body.
I hope I helped :)
<span> sunlight, little water, air, rock these are some :)</span>