Which major processes were needed for the origin of life on Earth? A. Abundance of oxygen and the ozone layer B. Active volcanoes and very cold temperatures C. Low levels of ultraviolet radiation and specific mixture of gases D. Organic molecules produced from spontaneous synthesis or from meteorites

What does homeostasis means in biology?

What evidence did mendel find that supported his law of independent assortment? a. dominant traits are expressed when there is a dominant allele. b. traits do not affect the inheritance of other traits. c. some traits have three or four different alleles. d. plants and animals can both reproduce sexually.

What is the key to the recognition of codominance?