Which option correctly shows the flow of energy from left to right in a food chain? sunflower → robin
human → potato
lizard → grass
ladybug → tomato

What color of light must blue light mix with to create white light? a. yellow b. white c. blue d. green

Who was the first scientist to measure speed as distance over time?

The sun’s mass is 2.0×10^ 30 kg, its radius is 7.0×10 5 km, and it has a rotational period of approximately 28 days. if the sun should collapse into a white dwarf of radius 3.5×10 3 km, what would its period be if no mass were ejected and a sphere of uniform density can model the sun both before and after?