1. Scientists are concerned about the global temperature rise, the increase in CO2 in our atmosphere, the melting glaciers and other impacts of climate change and our over use of fossil fuels. Using your previous learning on climate change (term 1 and 2) and this new information on how climate change is delaying an ice age, what is your opinion on climate change?

Climate change is bad and ok in both ways , climate change makes places hotter and hotter and can be the reason on many things that have took place and with this there is also a good side on climate change ,that is that it is delaying an ice age so i do think that it is not as bad as it is commercialized to be.

Explanation:

Thats my opinion

considering the question as per the attachment

here we can see that the radon nuclide has 222 as the atomic mass number and 86 as the atomic number.

when it undergoes nuclear fission it gives polonium which has atomic mass number as 218 and atomic number will be 84 along with a helium nucleus which has 4 atomic mass number and 2 as its atomic number.

222 = 218 + 4 (atomic mass number)

86 = ? + 2; therefore ? = 86-2 = 84.

the atomic mass number of polonium will be 84.