What are earths two internal sources of heat energy?

Humans are multicellular organisms unicellular organisms noncellular organisms the cellular organism

A temperature change in a reaction indicates a physical change. a. True b. False

Which metal is the most abundant in the Earth's crust aluminum (Al) iron (Fe) copper (Cu) zinc (Zn)

Which of the following statements are true? Select all correct responses. Choose all that apply. Choose all that apply. The total momentum of an isolated system is constant.

The unique sound quality of a clarinet or a violin is caused by the

The kinetic energy of a moving object is equal to the work required to bring it to its speed from rest, or the work the object can do while being brought to rest.

Imagine standing on a bathroom scale and reading your weight. now lift one foot and read your weight again. does the scale read more, less or the same weight when you are standing on one foot?

The period T of a simple pendulum depends on the length L of the pendulum and the acceleration of gravity g (dimensions L/T^2). (a) Find a simple combination of L and g that has the dimensions of time.

What is an example of the theory that the best adapted organisms for an environment are the ones most likely to survive

What does not affect the apparent brightness of a star?