The sun's gravitational pull keeps the in their orbits, just as a planet's gravitational pull keeps its in their orbits. a. planets; stars b. stars; moons c. planets; moons d. moons; stars

C. planets; moons

Explanation:

From Newton's law of inertia, a body keeps moving in straight line and or be at rest, until an external unbalanced force acts on it.

The planets remain in the orbits around the sun and similarly moons remain in the orbits around their planets due to  gravity.

Sun's gravitational pull keeps the planets in their orbits, just as a planet's gravitational pull keeps its moons in their orbits.

In the absence of gravity, the planets  and moons would move in straight line path.

a. to encourage apoptosis

ecological efficiency: % of usable energy transferred as

biomass from one trophic level to the next typical is 10% efficient (90% of

energy is lost),is diagramed as the pyramid of energy flow. then osprey eagle

are tertiary consumer and the shrimp are primary consumer, so to balance

mass of shrimp (1/0.1) / 0.1 = 100 kg