We know that the atmosphere became more oxygen rich around 1.8 ga because of geologic evidence such as:

Which of the following is an advantage to co-evolving with a pollinator, rather than using wind pollination? a. Pollinators require more energy to attract b. Pollinators reduce the chance of hybridization c.

Small ions in biological fluids: A) encourage strong electrostatic interactions between oppositely charged macroions at low ionic strengths. B) encourage strong electrostatic interactions between oppositely charged macroions at high ionic strengths.

Which represents polygenic inheritance of traits? a>a cow that has red and white dominant coloring b>a mix of blue, green, and brown eye colors c>a plant that has pink flowers produced from a plant that has red flowers and a plant that has white

Where is the energy stored in a molecule? * A. In the electrons B. In the bonds C. in the atoms D. in the nucleolus

What impression of Queen Mab does Mercutio create with the details he uses to describe her wagon, such as reins of spider webs and a whip of cricket bone? A. amusing and harmless B. rude and bawdy C. mighty and strong D. expensive and elegant

What is the main function of the excretory system?

What type of mountain would form from vertical movements along fault lines?

Which of the following landmarks is found on the posterior surface of the scapula? a) Coracoid process b) Glenoid cavity c) Spine d) Lateral border

what is the subdivision of the peripheral nervous system that connects to sensory receptors and to skeletal muscles called

What tool would you use for measuring the distance around a ball