Summarize the relationship among fossils, rock layers, and the divisions of the geological time scale.

According to this food web which of the following would be considered primary consumers

What is the genotype of the male circled in pink? ο χου lo xay xaya done answer was xay

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