Answer:
2
Explanation:
Because if you add 1 to 8 you get 9 then subtract 9 by 7 then and your answer is 2
Answer: Some are green because of the chlorophyll, some chlorophyll breaks dowm when its cold
Explanation:
Answer:
Sound waves behave in predictable ways.
Sound waves are compression waves that transfer energy in molecules.
All sound requires a medium through which to travel.
Explanation:
I am pretty sure these are the right answers.
Generally, the sun observes a solar cycle of eleven years. In this cycle, there are fluctuations in the activity, such as the ejected levels of solar radiation, and in the appearance of the sun, such as changes in the amount and size of sun spots, solar flares and other phenomena that occur on the sun's surface.
These changes also affect phenomena on earth, especially the auroras.
