Look for scientific research about whether these claims are correct or not.
Explanation:
The best thing to do after reading this advertisement is to look for scientific research about whether these claims are correct or not.
Answer: for 1 is number 1
and for 2 is 3
Explanation:
Hydrogen bonding hope this helps
Answer:
we can only see the parts of the Moon that are being lit by the Sun.
Explanation:
Answer:
False
Explanation:
The magnitude of any vector is given by,

The magnitude of anything is never negative. It can be even seen from the formula that the components are squared. A squared value can never be negative. Even if the component is negative the square will be always positive.
So, magnitude of the vector is <u>not</u> negative.