It is mass can not be created or destroyed
When you drop a ball, it is dropped DOWNWARDS so the number is represented by a negative number. If you toss the ball up it will be a positive number.
To answer your question:
When an object is dropped downwards there will be a negative number since the object is falling downwards.
TO. YOUR. BRAIN. have a nice day?
Answer:
a. body cells
Explanation:
Body cells are eukaryotic. Eukaryotic cells replicate via mitosis.
Answer:
The answer is A.
Explanation:
Moth with dark wings under the tree with dark bark have a higher chance of surviving as its wings protect them from predator due to similar colour features.