What is the expected outcome of adding a catalyst to a chemical reaction?
a. the reaction will speed up.
b. chemical equilibrium will not be reached.
c. the reaction will slow down.
d. no change will occur.

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

Imagine a rocket launching from earth and travelling to the moon. in which order would the rocket pass through the layers of the atmosphere? thermosphere, mesosphere, stratosphere, troposphere troposphere, mesosphere, stratosphere, troposphere thermosphere, stratosphere, mesosphere, troposphere troposphere, stratosphere, mesosphere, thermosphere

What are the formed elements (cell or parts of cell) in blood and what are their functions ?