Earth and its ecosystem are in a constant state of change. explain how a catastrophic environmental change, such as a wildfire in california, affects the local ecosystem. how does the ecosystem respond in this case

A wildfire in California can cause lots of changes in the ecosystem that has been affected by it. For starters the forests, shrubs and grasses will burn, so the basis of the ecosystem will be destroyed. While the grasses will grow again, the shrubs and trees will need much more time or might not even grow again at all. This leaves the animals without their environment to which they are adapted to, and instead of forest they will have a grassland (few months after). This usually causes big populations of animals to die out in that region. Also the soil will be exposed to erosion ones the trees are gone, which will contribute to quick changes in the shape of the terrain, and also the ground will be heavily affected by landslides after heavy rains. So all in all, the ecosystem will change overnight and it will have devastating effects on the flora, fauna, and the relief as well.

b. acid is the correct answer @jayxboof all social media

acid : acids are those which accepts an electron-pairs.

base : bases are those which donates ab electron-pairs.

alkali : it is a base that dissolves in water. it is basically a base and the ph greater than 7.

hydroxide ion : it is a poly-atomic ion which is negatively charged.

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.