When voltage increases and resistance remains constant what must happen to current? a) current must decrease. b) current must increase. c) current will remain the same. d) current is not affected by voltage and resistance.

Astudent drew the following flowchart to show the movement of nutrients. soil → roots → plants →? where does nitrogen go next? a. directly into nearby animals as nutrition b. directly into aquifers through condensation c. directly into the air through evaporation d. directly into nearby plants during fixation

In addition to seeds, which of the following characteristics are unique to the seed-producing plants? a) sporopollenin b) lignin present in cell walls c) pollen d) use of air currents as a dispersal agent e) megaphylls

24. how are vaccines used to keep people healthy?