Seedcoat protect the seed during unfavourable conditions.
The group that contains more individual aliens is a class
In scientific theory, genes are organisms that are transferred from a parent cell to the offspring. Overtime, it will determine some of the traits the offspring is taken from either parent.
Excretion is process of removing waste from the body.
The Pacific Salmon could be considered a keystone species because there are so many of them that they are like the main fish in the Pacific Coast area.