Plz i'm desperate! why are all people on earth members of the same biological species?
a. all people have the same genetic makeup.
b. all people originated from the continent of africa.
c. all people have adaptions that allow them to live anywhere on earth.
d. all people can mate with one another and have children.

Athermometer is removed from a room where the temperature is 70° f and is taken outside, where the air temperature is 10° f. after one-half minute the thermometer reads 60° f. what is the reading of the thermometer at t = 1 min? (round your answer to two decimal places.) ° f how long will it take for the thermometer to reach 30° f? (round your answer to two decimal places.)

Why is metal often used for cooking pan?

The energy of a photon was found to be 3.38 × 10–19 j. planck’s constant is 6.63 × 10–34 j • s. which color of light corresponds to this photon?