AP Cluster

Diamonds come from coal

• true

• false

Answer explanation

Most diamonds are so old that they pre-date plant life on Earth, the organic basis for coal.

Cracking your knuckles frequently increases your chance of developing arthritis in your hands

• true

• false

Answer explanation

False: but those who excessively cracked their knuckles did have slightly weaker grip strength later in life.

Birds Evolved From Dinosaurs

• true

• false

Answer explanation

Birds evolved from theropods, a group of three-toed, hollow-boned dinosaurs including Velociraptor and T. Rex

The Great Wall of China is the only man-made thing visible from space

• true

• false

Answer explanation

The Great Wall of China is nearly the same color as the area surrounding it, so it's difficult to distinguish the wall from its surroundings.

Bats are blind

• true

• false

Answer explanation

Bats have limited vision due to their small eyes, but they are not blind. Most bats have better night vision and often hunt at night

Venous blood is blue: Blood is red, and the red color comes from hemoglobin in red blood cells

• True

• False

Answer explanation

Blood is red, and the red color comes from hemoglobin in red blood cells