Approximately how long have homo sapiens been on earth, according to the fossil record?

Is meiosis asexual or sexual?

Plasma without platelets is called? red blood cells white blood cells serum

What is one benefit of recycling? A. it increases the volume of solid waste B. if it is recycled, a material won't biodegrade C. it conserves resources and energy D. it uses more raw materials that need to be mined

Name the eight levels of classification from most general to most diffrent

Why might it be a problem for fish and other organisms in a pond if all the algae died?

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

Which process occurs in mitocodria

Biogeographic isolation separates of a species through geographical and biological forces.