The video shows a collapsing cloud of interstellar gas, which is held together by the mutual gravitational attraction of all the atoms and molecules that make up the cloud. as the cloud collapses, the overall force of gravity draws the cloud inward because
(blank 1) gradually becomes stronger
(blank 1) gradually becomes weaker
(blank 1) stays constant at all times
(blank 2) the strength of gravity follows an inverse square law with distance
(blank 2) the mass of the cloud increases as it collapses
(blank 2) the total gravitational force is a conserved quantity

the overall force of gravity draws the cloud inward gradually becomes stronger because the strength of gravity follows an inverse square law with distance

Explanation:

gravity is stronger the closer the two objects are, the formula is

G * M1 * M2 / r^2

G being a constant, M1 and M2 being the mass of the two objects and r being the distance between them

weather forecasts are done by collecting data about the current state of the atmosphere mainly the temperature, humidity and wind and using meteorology, to determine the atmosphere that evolves over time. the h and l mean the high and low pressure. the red strip is a warm front. the blue strip is a cold front. the blue and red strip is a stationary front. the purple strip is a occluded front.

explanation: