A copse, wood or forest, dependent on how many trees.
evergreens
The total number of apple trees in the orchard is 30 rows x 20 trees = 600 apple trees.
The name of the white mushroom that grows on trees is the "oyster mushroom."
evergreen
A group of trees that bear cones are called conifers. Conifers are a type of gymnosperm that produce seeds in cones and have needle-like or scale-like leaves. Examples include pine, spruce, fir, and cedar trees.
Deciduous trees.
Such trees are Deciduous.
evergreens
Trees absorb Carbon Dioxide (CO2)
IN Hebrew: Tzameret (צמרת‏)
red wood
A scinio
An orchard.
There are a number of fruit trees that are given the name "paw paw" (see related link below), however if you mean the "papaya" then the Latin name is Carica papaya.
Latex
The name given to the number of particles in a mole is Avagadro's number/constant
Factor trees are a way of notating the process of finding the prime factorization of a given number.