Based on the cycle of photosynthesis and cellular respiration, one can say that the ultimate original source of energy for all living things on earth is

What is another type of fast environmental change

Meiosis is different from the process shown because, during meiosis, A) chromosomes are not replicated. B) two gametes are made for every original cell. C) four gametes are produced for every original cell.

Develop a project pitch on how to improve our city streets

What charaterictics of the cell memebrane determine what gets into the cell and what doesn't

What is the function of the promoter in a DNA molecule? It provides RNA polymerase with a place to terminate transcription. It provides RNA polymerase with a place to begin transcription.

The ovaries are located in the ___ cavity.

Transport of materials into a cell against a concentration gradient, from low to high, requires A) water. B) energy. Eliminate C) osmosis. D) a passageway.

As ocean water in a tide pool warms and evaporates, the remaining water becomes a. cooler. b. saltier. c. calmer. d. darker.

Drake is comparing time people spend playing games on Xbox versus Playstation. In his study, individuals ages 10 - 15 are given Xbox's and individuals ages 16 - 25 are given Playstations.

How do scientists obtain knowledge about the world? Check all that apply.