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

Which energy source would providebthe cheapest electricity for a factory solar panels wind turbines gas generators a hydroelectric plant

How does carbon enter soil

What is the main difference between the intertidal zone and the neritic zone? the amount of exposure to sunlight the amount of salt in the water the amount of time covered by water the presence of plants and animals

Which statement best describes why food webs consist of many food chains put together? A. All animals are carnivores. B. All living things eventually die and decompose. C. Most organisms eat more than one thing. D.

Which statement best illustrates a factor that affects a protein's function? A) Amino acids link through peptide bonds, forming proteins.

Whats the difference between Phylum and Genus

What tool is used to measure the movements of paramecium

How are earthquakes and volcanoes related

How does the color of light affect the rate of photosynthesis

What does the term "unzipping" refer to in dna replication? a. polymerization b. breaking hydrogen bonds c. the movement of dna polymerase d. matching complementary nucleotides user: dna replication occurs a. so that a cell can grow. b.