To determine whether two species evolved from a common ancestor, geneticists may examine the biochemical makeup of each species to look for relationships. describe a study a geneticist could conduct to explore the relationship between two species that may not appear to be closely related.

Sydney drew a flow chart to illustrate the nitrogen cycle. which labels best complete the flow chart? x: producers undergo photosynthesis. y: nitrogen compounds are released into the air. x: nitrogen compounds are released into the air. y: producers undergo photosynthesis. x: free nitrogen is in the atmosphere. y: producers absorb nitrogen compounds through their roots. x: producers absorb nitrogen compounds through their roots. y: free nitrogen is in the atmosphere.

Describe the primary and secondary immune response in terms of speed and number of antibodies produced?

Aflashlight battery is an example of a) potential energy b) kinetic energy c) thermal energy d) solar energy