Explanation:
mass is a weight ofan object .
Answer:
The lens
It helps to focus on objects and light
Gravity is pulling her towards the ground but also forward as the child is on a slope. Friction is pulling against the child as the slide pulls against her.
Answer:
Mutation is important as the first step of evolution because it creates a new DNA sequence for a particular gene, creating a new allele.
Explanation:
Answer:
1. The animal can't see what happening behind its head.
2. Head can be moved upto 180 degree angle in most of the animals including humans. But it is not true in case of birds.
Explanation:
