Which object is created during the formation of a star? A) a nebula
B) a protostar
C) a supergiant
D) a supernova

Astudent is working on an experiment to study the cooling curve of water. during the experiment, a beaker containing hot water falls to the floor and is shattered. the student’s immediate response should be to

Based on the law of dominance, we would expect percent of the offspring from this cross to have large teeth.

Which of the following particles always has a positive charge? a. electronb. neutron c. proton d. ion