Two-thirds of the Earth's surface is covered by water. The water cycle includes these water sources evaporating and returning to Earth as rain and snow. What is the driving force behind the water cycle?

How much energy is available at the third trophic level if the first trophic level has 300,000 kilocalories of available energy and the loss rate between trophic levels is 90 percent? A. 300.000 kilocalories B. 30,000 kilocalories C.

Which of the following BEST describes Meiosis? a process prior to the first stage of cell division b occurs in all cells of the body system c cell division that occurs in the repair process of damaged skin cells d cell division that occurs only in

What is true of the process of DNA synthesis? 1) Sister centromeres are created for each gene found in the parent cell. 2) Sister chromatids are created for each of the multiple chromosomes found in the cell's nucleus.

A scientist conducts an experiment to test a hypothesis. The experiment confirms that the hypothesis could be true. When will the hypothesis most likely become a scientific theory? A. when the hypothesis is first thought of by the scientist B.

Which of the following is a part of the embryo of a seed?

Which statement best summarizes what happens during transcription? A DNA template is used to create an mRNA strand. An mRNA template is used to create a DNA strand. A DNA template is used to create a ribosome.

Describe how chromosomes and genes are related

During formation of a peptide linkage what is formed?

Can the hypothalamus gland repair itself?

Approximately how many genes are found on chromosome 11?