Which of these are limiting factors?
a- habitat loss b- all of the above
c- food availability
d- predators
e- disease and parasites

all of the above

Explanation:

habitat loss, food availability, predators and disease are all limiting factors in terms of survival

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

sodium i think the chemical element of atomic number 11, a soft silver-white reactive metal of the alkali metal group.