Multiple species of lizard feed on insects in the Caribbean islands. One species of lizard lives on the ground, while another lives on tree branches.
Which statement is true of these two lizard species?
A. They have adapted to different niches due to competition.
B. They have adapted to different niches due to predation.
C. They have a mutualistic relationship with the insect species.
O D. They have the same niche: the Caribbean islands.

Which of the following cell structures is significantly different between gram- positive and gram-negative bacteria?

On a spring day, a middle-latitude city (about 40? north latitude) has a surface (sea-level) temperature of 10 ? c. if vertical soundings reveal a nearly constant environmental lapse rate of 6.5 ? c per kilometer and a temperature at the tropopause of –55 ? c, what is the height of the tropopause?

Which of the following would be the best hypothesis for this experiment? a) use of the ginko biloba extract improves clinical outcomes when administered to patients with t2d. b) ginko biloba improves clinical outcomes of diabetes patients when combined with metformin. c) diabetes in patients is worsened when ginko biloba is taken in conjunction with metformin. d)the use of ginko biloba to treat t2d in combination with metformin lowers the cost of t2d treatment. ginko biloba shows benefits against t2d when combined with plant extracts as compared to other treatments.