If a pollutant decreased from 500 ppm to 400 ppm, what is the percent change?
In an urban pond, fertilizer runoff leads to algae blooms. W…
In an urban pond, fertilizer runoff leads to algae blooms. Which cycle is most affected?
Your biomass calculations show you need 10 kg of secondary c…
Your biomass calculations show you need 10 kg of secondary consumers. How much biomass is needed at the producer level?
What is the role of the independent variable in an experimen…
What is the role of the independent variable in an experiment?
A diagram shows that oxygen levels are lowest in July. What’…
A diagram shows that oxygen levels are lowest in July. What’s the likely cause?
What is the best metric unit for measuring the thickness of…
What is the best metric unit for measuring the thickness of an eggshell?
A student observes that trees near a parking lot are shorter…
A student observes that trees near a parking lot are shorter than those farther away. What is the dependent variable?
Why is replication important in experimental science?
Why is replication important in experimental science?
A marsh ecosystem loses most of its tertiary predators. What…
A marsh ecosystem loses most of its tertiary predators. What’s the most likely result?
The healthcare provider ordered 500 mL NS to run over 8 hour…
The healthcare provider ordered 500 mL NS to run over 8 hours. The tubing on the infusion pump delivers 20 gtt/mL. What would be the correct IV flow rate to set on the infusion pump? Round off to the nearest whole number.