How much time does it take for light from the center of the galaxy to reach Earth?

Which of the following is not and example of chemical weathering

Why is the manatee classified as an herbivore?

What system of units is used by only a small number of countries in the world, including the U. S.?

What are the coordination numbers of li + and s2 - in the lithium sulfide crystal shown? enter the values in order of li + and s2-, respectively?

How does entropy change with pressure?

Which of the following is not true about the importance of the carbon cycle to living things? a. Plants use carbon dioxide to make energy. b. Carbon is the second most abundant molecule in organisms. c.

Fruit flies can either have a brown body or a black body. The allele for a brown body (B) is dominant to the allele for a black body (b). A brown fruit fly was crossed with a black fruit fly as shown below.

A light-year measures the distance a light beam can travel in one year. One light-year is equal to 9 500 000 000 000 kilometers.

The first ionization energy, e, of a potassium atom is 0.696 aj. what is the wavelength of light, in nm, that is just sufficient to ionize a potassium atom? values for constants can be found here.

A gene is a to a chromosome as (A) a pea is to a pod (B) a front to a back (C) a bike is to a car (D) a building is to a window