Anaerobic photoautotrophs were the first organisms to release oxygen into the early atmosphere.

a. True

b. False

Can humidity exist in freezing temperatures

Did dinosaurs exit at the same as mammals? explain your answer using the geologic time scale

Which statement describes why the devshirme system was so important to the Ottoman Empire? A. It encouraged Europeans to trade along routes that the Ottoman Empire controlled and taxed. O B.

Suppose that the mutation rate per base pair for a genetic locus is 4 Ã 10â8, and that the locus contains 1,500 base pairs. What is the per-locus mutation rate? A) 4 Ã 10â5 B) 6 Ã 10â5 C) 8 Ã 10â5 D) 4 Ã 10â4

What is true of genes found in chromosome

Does cell beneath formative phase differ from each other

Egg laying in fruit flies can be triggered (induced) when males deposit their sperm in the spermathecae of the females. what is the selective advantage of induced egg laying for the male flies?

What part of the brain is responsible for maintaining consciousness, mental processing, and normal speech?

Which of the following best explains how a dissecting microscope differs from a compound light microscope? A) We do not have enough evidence yet to call cell theory a law. B) We have not reviewed cell behavior enough yet to call it a law.

What happens to pyruvate molecules formed in glycolysis in the absence of oxygen?