How much leg lunges squats push ups and sits ups should a 13 year old boy do a day?

States of matter depend in part on the blank of an item

Giraffes have longer necks than other herbivores. This trait is probably most important for ...

Where do earthquakes come from?

If f (x) = 27+1, what is f/x) when x = 3? 1

Find the time th it takes the projectile to reach its maximum height h. express th in terms of v0,?, and g (the magnitude of the acceleration due to gravity).

How does scientific knowledge develop through making observations about the natural world?

Why do the earth have many states

Problem page a cyclist traveled 20 kilometers per hour faster than an in-line skater. in the time it took the cyclist to travel 80 kilometers, the skater had gone 30 kilometers. find the speed of the skater.

What is emitted during fission

If a magnet is broken into two pieces, what happens to the magnetic poles? One piece will have a north pole, while the other piece will have a south pole. Each piece will still have a north pole and a south pole.