Answer: D, Scientists cannot predict what other unintended effects large concentrations
of iron may have.
Explanation: just took quiz ap3x
Pathogens generally invade the body, in their invasion they can duplicate and cause confusion such as hijacking your cells, thus they cause infection and disease. Some of these pathogens are spread through air, sweat, blood, excrete (urine/feces), or general human contact with anything concealing the pathogen.
Answer:
NY deers love to reproduce and do it often
Explanation:
Your heart is a pump that helps pump oxygen throughout your body. Your heart replenishes your blood with oxygen so that your cells can function properly. So the correct answer is D. muscle that helps to pump oxygen around the body.
Money is not a limiting factor in the environment, so the answer would be B.