Correct answer is (D. Once created in bone marrow, they circulate for our lifetime)
A certain minivan has a maximum carrying capacity of 1,200 pounds. The luggage weighs 150 pounds
Answer: The answer should be D .
Explanation:
Carbon dioxide, oxygen, water, and acids may all cause chemical weathering. Mechanical weathering is the process of breaking a large rock into smaller pieces without changing the minerals in the rock. Mechanical weathering may be caused by frost, ice, plant roots, running water, or heat from the sun.
