Abody cell is in the longest stage of its life cycle. the cell grows, synthesizing proteins and increasing in size. eventually, the cell will grow too large to carry out normal activities and begin mitosis. which phase is the cell in?

Nucleic acids offer variability because they contain alternate forms of genes called .

Which of the following is a reason why early living organisms on earth could not have survived on the surface? 1. the lack of an ozone layer 2. the lack of oxygen in the atmosphere 3. the fact that these organisms were single-celled

Which of the following observation darwin shape his concept of descent with modification? a) species diversity declines farther from the equator. b) fewer species live on islands than on the nearest continents. c) birds live on islands located farther from the mainland than the bird's maximum nonstop flight distance. d) south american temperate plants are more similar to the tropical plants of south america than to the temperate plants of europe. e) earthquakes reshape life by causing mass extinctions.