Which is a hypothesis?

A.) Clouds are observed in the sky.

B.) You can relate the shape of a cloud to other objects,

C). Why do clouds produce rain?

D.) Clouds are made of water droplets.

Which chemical is released by brain cells along an activated reward pathway?

Which of the following scenarios would create the most friction between the two surfaces? A.) a shoe with a rubber sole moving against a smooth tile floor B.) a shoe with a wooden sole moving against a smooth tile floor C.

How to change milomilicenters into kilometer

Ho Chi Minh led the Communist forces in Indochina and in North Vietnam. a. True b. False User: Hitler and Mussolini headed two of the Axis powers of World War II. a. True b. False

What most closley defines population density?

What kinetic energy has 1 tone car traveling at 15 m/s

Ceres is a dwarf planet located in the main asteroid belt.

Which solid is the best thermal insulator A. brass b. ice C. styrofoam D. copper

When a high-mass star explodes, which of the following is left over in the center? A. Black hole B. Neutron star C. White Dwarf D. either a or b

Which object is an insulator?