In this activity, you’ll use a simulation to learn about chemical reactions between atoms and molecules. Get started by following these steps: Go to the simulation Balancing Chemical Equations.
Click the simulation and select the introduction. Balance the three equations using the balance scale and graph tools.
When you’ve finished all three equations, go to the game and select level 2. Complete all five challenges.
Now use what you learned from the simulation to answer the following questions.

Part A
Based on your experience in the simulation, what do the numbers 3 and 4 refer to in 3NH4?

some of your causes might be acidic rain or natural wildfires that cause the parks to be degraded

hope this any more questions i am here plz mark brainliest

about 40,000,000 results (0.81 seconds)  

search results

what do the different brain waves do?

explanation:

brainwaves are produced by synchronised electrical pulses from masses of neurons communicating with each other. brainwaves are detected using sensors placed on the scalp. brainwave speed is measured in hertz (cycles per second) and they are divided into bands delineating slow, moderate, and fast waves.

the solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.