Answer:
Astronomy is the study of everything in the universe beyond Earth's atmosphere. That includes objects we can see with our naked eyes, like the Sun , the Moon , the planets, and the stars .
Explanation:
Answer:
Explanation: The reactivity of metals increases as you move left in a period and as you move down in a group, so Marie needs to know the period and group of the element inside each box. Boxes that show locations in groups 1 or 2 or in period 8 contain the most reactive elements.
Answer:
Drinking alcohol in the first three months of pregnancy can cause the baby to have abnormal facial features. Growth and central nervous system problems (e.g., low birthweight, behavioral problems) can occur from drinking alcohol anytime during pregnancy.
Explanation:
The answer is A. populations, communities, and ecosystems
The answer would be c, obtain the same results after the experiment is done
