Answer:
D. Gravity.
Explanation:
Gravity is the force that holds objects that attracts objects. Planets are bound to their star because they are attracted to it.
Very nice
very good lookin
better reals and calming
an animal that eats both plants and animals is an omnivore.
Around 1800 (plus or minus about 5 years) is when it was estimated that the world's population had reached 1 billion.
