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

The punnet square shows the results when two parent cows are crossed. R represents red hair and represents white hair. Which best describes this inheritance pattern?

Which is the best example of fluid intelligence? A. extensive knowledge of computer programming B. the ability to quickly recognize relationships between words C. knowing the names of the British monarchs in chronological order D.

Is the binding of a transcription factor to its dna recognition sequence necessary and sufficient for an initiation of transcription at a regulated gene?

When tissues are damaged, they undergo regeneration. In this process, ___ remove dead or injured cells, while other cells divide and begin to repair the wound.

Name three things farmers can do to reduce soil erosion

The "sphere" that includes all of the water in, on, or around the Earth is the A. biosphere. B. exosphere. C. geosphere. D. cryosphere. E. atmosphere. F. hydrosphere.

What is the arrangement of phospholipids in the plasma membrane

The percentage of energy that flows from one trophic level to another is?

True or false covalent bonds take place between 2 non metal elements

In peas, yellow color is dominant to green. What will be the colors of the offspring of the following crosses? a. homozygous yellow x green b. heterozygous yellow x green c. heterozygous yellow x homozygous yellow d.