4. Zero population growth occurs when a population has the same number of individuals entering the population (births) as those leaving the population (deaths). This results in very little change in the overall population numbers. In which
year, was the deer population closest to ZPG? How do you know?

Ok so I'm not sure what the 2 line graph lines are meant to represent but if they represent deaths and births then the closest the deer poplualtion was to ZPG would be 1974. How you would know is that the number of births or deaths is closest in relation to births or deaths. Sry if this confuses you more haha but it doesn't say what the 2 line components are meant to represent in the image. Hope this helps! :)

Explanation:

x would be the most and the least would be y because there are more fruit   and seeds than flock z has insects

all matter is made up of atoms

in any element all atoms are the same

elements in a compound are always in a constant ratio: apex