How do scientists assess changes in land cover and land use

Three students decided to make money shoveling snow. They shoveled snow for five days. Akeo earned $162 on Friday. Cristina earned $284 on Wednesday. Oscar earned $204 on Monday. These were the maximum amounts earned by each.

What two gases are the sun mostly made of

A 0.005 kg bullet is travelling horizontally at a velocity of 250 m/s when it strikes a wooden block of mass 12 kg on a table at rest. the bullet sticks in the block of wood.

A group of students put a ford focus in neutral and push the car with 500 N of force to the right, causing the car to travel a distance of 10 meters. How much work did the students do on the car?

What does it mean to control variables

For glass fragments to be individualized, what must be true? A. They must fit together B. They must have the same density C. They must look the same D. They must be the same color

In what way would a digital thermometer be preferable to those from a liquid-based thermometer? Digital thermometer readings are easier to use when performing calculations.

Why does the core of the sun contain more helium and less hydrogen than the surface of the sun?

What happens to a light ray passing through the center of a lens?

A spider crawling across a table leaps onto a magazine blocking its path. The initial velocity of the spider is 0.870 m/s at an angle of 35.0° above the table, and it lands on the magazine 0.0770s after leaving the table. Ignore air resistance.