According to the scientific view, about how many years ago did life on earth begin?

A. 3.5 million years ago

B. 3.5 billion years ago

C. 350,000 years ago

What is the major difference between Prokaryotic cells and Eukaryotic cells? (choose 2) They lack a cell membrane They lack cytoplasm They lack a cell wall They lack a nucleus

Under the constitution of the united state you may not be deprived of life liberty of propert without

What is an estuary? How and why does the salinity of estuaries vary?

How does dna carry information about the traits of an organism

4. Which of the following is an animal waste product? - Oxygen - carbon dioxide - water - energy

If an environment changes and an organism doesn't have an adaptation to the new environment, what's going to happen to that organism?

Which theory says that populations change slowly over time? The theory of evolution The theory of natural selection The cell theory Theory of extinctions

How does the filtration membrane prevent certain substances from entering the filtrate?

List and describe 3 senses that sharks use to locate prey.

Where can you find carbon inside an organism?