Which best characterizes the Precambrian era?

A.

abundant plants and animals

B.

dinosaurs

C.

small, one-celled organisms and primitive jellyfish

D.

extensive mountain building

What is the diffrence between a saturated and unsatuered fatty acid?

A nurse is providing education to a client with polycystic kidney disease (pkd). what are the four (4) disease management areas to review with this client?

Which statements reveal properties that can be used to identify minerals? A mineral is found in Africa. A mineral is made in a laboratory. A mineral glows under ultraviolet light. A mineral has hexagonally shaped crystals.

Choose the correct sequence starting with the smallest unit:? a. Nucleotide, allele, gene, DNA, chromosome b. Gene, nucleotide, allele, DNA, chromosome c. Nucleotide, DNA, allele, gene, chromosome d.

It was the thought that there were areas of the earth where life couldn't exist, since the temperatures were not suitable for most animals to survive. True or false?

Explain wether nitrogen atoms will form bonds with other atoms

What are examples of radio waves

In a population of spiders there are three different sizes: small, medium, and large. - --The large spiders are easily seen by predators. - --Small spiders have a difficult time finding food.

what is one type of new constellation that edmond halley saw in the sky while he was on the island of st. helena

Global winds and ocean currents are not related to and do not affect climates true or false? and why