Because they are not easily defined in terms of a typical community of plants and animals
For the answer to the question above, I believe the answer is that the bones get or have a greater risk for bone fracture <span>if calcium is not replaced in bone tissue. The bones could become more brittle. For women, they can suffer from Osteoporosis. </span>
Answer:
Im pretty sure that "Refining oil pollutes the air with nitrogen dioxide" is a true statement.
Explanation:
well,,, all the others are false because: groundwater is definitly part of the water cycle, most of earth's water is NOT fresh bc only 2% of earth's water is fresh, and hydroelectric power would contribute more to water pollution than to thermal pollution-
(I hope this was helpful)
True, the most common chronic diseases involve the heart.