A soccer ball is traveling at a velocity of 50 m/s. The kinetic energy of the ball is 500 J. What is the mass of the soccer ball? (Formula: ) 0.1 kg
0.2 kg
0.4 kg
0.5 kg

Why are scientists concerned about the depletion of the ozone levels in the stratosphere?

What is the ecological role of food chains and food webs

How do you know that the plant cells in these two images have different jobs, or functions? a. because all plant cells serve different functions b. because they are two different colors c. because their dna are different d. because their structures are different