What is the efficiency of a car's engine when heat input is 400,000 joules and the waste heat is 300,000 joules?
O A. 25%
B. 35%
O C. 75%
D. 85%

In the image, the arrow is pointing to a celestial object. which attribute disqualifies the object from being a planet?

1. how to locate the image in converging(concave) mirror and diverging (convex) mirror with salt. 2. how to locate the image in a converging (convex) lens and diverging (concave) lens with salt.

How do the kidneys affect homeostasis