If a rock has equal amounts of lead and uranium in it how old is the rock?

An advantage of using an electromagnet, instead of a regular magnet to move cars in a junk yard is then an electromagnet can easily be turned on and off. True or False.

How does friction relate to heat energy? Friction can produce heat energy. Friction can create heat energy. Friction can destroy heat energy. Heat energy produces friction.

What noise does a deer make?

In which part of the nephron are sodium and chloride ions actively reabsorbed?

Which part of the cell theory did these results support the most?

Which did a large earthquake in Alaska initally cause? which did a large earthquake in Alaska initally cause? A. a volcanic eruption B. flooding C. a landslide D. a tornado

What type of asteroid/meteorite do they believe brought some water to the Earth? a. Stoney Iron b. Iron c. Steel d. Carbonaceous Chondrite

If a cell has 12 chromosomes, how many chromosomes will each of its daughter cells have after mitosis and cytokinesis? and can u explain because i dont understand

A lab technician runs the results of a simple PCR reaction through a gel electrophoresis to test a sample of imported hamburger meat for the presence of a DNA sequence that is known to be found in kangaroos and not in cows.

If Earth was not titted on its axis, what changes would you expect to see in the seasons?