17- the germ theory im not sure a6out this one
18- increased soil erosion
19. Bubonic Plague
20. Regenerate
21. Type of wheat
As a result of gerrymandering, residential segregation remains a problem in the united states. The gerrymandering is a run through envisioned to form a political benefit for a particular party or group by handling district limits and the subsequent district is recognized as a gerrymander.
Explanation:
The major blood vessels that are connected to the heart include the aorta, the superior vena cava, the inferior vena cava, the pulmonary artery (which takes oxygen-poor blood from the heart to the lungs, where it is oxygenated), the pulmonary veins (which bring oxygen-rich blood from the lungs to the heart) and the coronary arteries (which supply blood to the heart muscle).
Answer:
The rapid changes would make an organism change their land, environment around them, and the food web