When do scientists believe life originated on Earth?

A.

3 to 4 billion years ago

B.

600 million years ago

C.

less than 6,000 years ago

D.

over 5 billion years ago

Which of the following is a disadvantage of artificial selection?

Letitia tells her son Evan that he may have one piece of candy with his lunch

Which zone is most likely to have insects and very little plant life?

Hey Professor researching see stars off the coast of France has been offered a position at a Mexican university should the researcher assume that his past experiments would produce the same results in the coastal regions of Mexico

Sabine has a severe impairment in reading and spelling ability. identify the condition that sabine has.

What cell is located on the surface of an endoplasmic reticulum?

This condition involves progressive demyelination of neurons in the CNS accompanied by the destruction of oligodendrocytes. As a result, the conduction of nerve impulses is disrupted, leading to impaired sensory perception and motor coordination.

Describing Spiral Galaxies Why are spiral galaxies so bright

List four factors that can cause slope or land movements

Which best describes the scientists who have contributed to our current body of knowledge? A. Almost all males B. People of all races and genders C. Almost all Europeans D. Currently only South Asians