Our immune system defends us from familiar or weak germs.
The answer is Both 1 and 3
Answer:
Most likely to be a heart attack
Explanation:
true. Nicotine patches have been shown to improve patients states of depression, but only in short term.
Leukemia is either acute (comes on suddenly) or chronic (lasts a long time). Acute leukemia affects adults and children. Chronic leukemia rarely affects children.
