3. What ecosystem has never been colonized by humans?

Which dating method determines a fossil's age by comparing it to other fossils? A. fossil record B. relative dating C. absolute dating D. radioactive dating

Why is it beneficial for cells to be small? Select all that apply. a. to quickly move waster products out of the cell b. to create a small surface area to volume ratio c. a small size slows down material exchange, which is beneficial to the cell d.

When two plants, both tall, were crossed, they produced some offspring that were dwarves. Assuming that the height of the plant is controlled by a single gene and the allele for the tall plant is dominant, what is the genotype of the parents?

Which term refers to water that is drinkable without being treated for bacteria, mineral deposits, and poisonous contaminants?

Give an explanation of why warm air rises

Jane filled one transparent bottle and one brown bottle of the same capacity with pond water. She kept the first bottle in sunlight and the second in dark. After one hour she calculated the amount of oxygen present in both the bottles.

The kingdom contains all autotrophic organisms.

Bacteria cell traits

Which of the following is NOT a terrestrial biome? a desert a chaparral an estuary a tundra

Consider five independently assorting gene pairs, a/a, b/b, c/c, d/d and e/e, where each demonstrates complete dominance (a_, b_, c_, d_, and e_) and recessiveness (aa, bb, cc, dd and ee).