Arrange the events in the order that they're likely to occur leading up to the formation of a solar system. The temperature increases.
The nebula shrinks.
The nebula spins.
A cloud of dust and
gas forms.
The nebula flattens into
a disk.
Nuclear fusion takes place.

What are four key elements of the study of economics?

Suggest why placing wheels under a heavy box reduces the neccessary force required to push it along at a constant speed.

Which of these best describes what occurs during cytokinesis? a) the chromosomes are separated b) the cell begins to divide by replicating the chromosomes c) the cytoplasm is divided between the two new daughter cells d) the nucleus opens to allow the chromosomes to enter the cytoplasm