Answer:
I just took the quiz and got 100% when choosing A.Conservation. Hope this helps:)
Answer:

Explanation:
The period of a simple pendulum is given by:

where
L is the length of the pendulum
g is the acceleration of gravity
From this equation we can write

Taking the square of this equation, we get:

So we see that
is proportional to L and inversely proportional to g. So, we can write:

So the only correct option is

Answer:
180°
Explanation:
Friction, if it exists, ALWAYS opposes motion or attempted motion.
Answer:
1. Where they multiply and stimulate formation of root nodules.
2. Enlargements of plant cells and bacteria in intimate association.