What keeps the Earth in its orbit? (10 Points)

the Sun's rotating speed

the Sun's gravitational pull

the Earth's rotatation

The Earth's location in relation to other planets

the nitrogen cycle provides nitrogen to the ecosystem from the atmosphere, ground and oceans. nitrogen is an important component of complex molecules such as amino acids and nucleotides, which lead to the creation of proteins and dna, the building blocks of all life. plants absorb nitrogen in the form of ammonium, nitrate ion and, on rare occasions, as amino acids. animals receive nitrogen necessary for biological processes from feeding on living or dead organic matter.

i think it is d. objects resist changes in their state of motion.