Which of the following lists of elements includes only metalloids?

Kr, Si, Ca

B, Ge, Sb

Ge, H, Rn

As, Cl, Na

Area where magma from deep within the mantle melts through the crust

Can two atoms with the same mass number be isotopes? And with the same atomic number?

Usable energy is lost each time energy is converted to another form of energy. true or false

The seasons on earth are created by all of the following except: a. the revolution of earth on its orbit around the sun b. the tilt of earth on its axis c. mountain winds d. solar energy from the sun

What is a sentence for crater

Resistors in parallel together contain less resistance than resistors in series together. Create an analogy to explain this phenomena and post it here.

Unlike the idealized voltmeter, a real voltmeter has a resistance that is not infinitely large. part a a voltmeter with resistance rv is connected across the terminals of a battery of emf e and internal resistance r.

The acceleration of an object is the slope of its velocity-time graph. True False

When a cannon fires a cannonball, the cannon will recoil backward because the?

True or False: As we learn more about organisms how we classify them can continue to change. O True O False