Which technology is shown in the photograph? A. Negative controls
B. Gel electrophoresis
C. Biostimulation reaction
D. Polymerase chain reaction

Question 3(multiple choice worth 4 points) (02.04 lc) which best describes the function of chloroplast? allows certa molecules to enter and exit the cell makes food during photosynthesis detoxifies waste products o packages proteins into vesicles

State officials are considering constructing a road through a forested wilderness area. this action will likely affect the forest ecosystem in various ways. part a: predict how the construction of a road could negatively affect plants and animals in that ecosystem. (3 points) part b: describe one way that the construction of a road could have a positive impact of the forest ecosystem. (1 point)

Describe the relationship and movement between temperature and density in a convection cell. make sure you identify the direction of travel