Elle wanted to test how temperature affects the rate of evaporation. she had
three setups
setup 1: elle placed a container with 1 cup of water at room temperature
(25°c).
setup 2: elle placed a container with 1 cup of water in a warm room (45°c).
setup 3: elle placed a container with 1 cup of water in a cold room (0°c).
which setup was the control?

pregnancy happens more and more

for example, no new evidence will demonstrate that the earth does not orbit around the sun (heliocentric theory), or that living things are not made of cells (cell theory), that matter is not composed of atoms, or that the surface of the earth is not divided into solid plates that have moved over geological timescales .

the earth is thought to have been formed about 4.6 billion years ago by collisions from a cloud of hydrogen, helium, rock, ice and other materials. these were pulled together by gravity to form objects in and around earth like- asteroids and small early planets called planetesimals.

so, the best possible answer to this question will be option d- to harden materials to form different parts of earth’s layers