1
that they cannot reproduce with each other, even though it would be technically possible if they were to meet. (2 words, beginning with R and I)
2
Species occur in different areas, which are often separated by a physical barrier such as a river or mountain range(2 words, beginning with G and I)
3
Species differ in their mating rituals (2 words, beginning with B and I)
4
Species occur in the same area, but they occupy different habitats. Survival of hybrids is low because they are not adapted to either environment of their parents. (2 words, beginning with E and I)
5
Species reproduce in different seasons or at different times of the day. (2 words, beginning with T and I)
6
When two members of the same species produce an offspring
7
connected series of neighbouring populations, each of which can interbreed with closely sited related populations, but for which there exist at least two "end" populations in the series, which are too distantly related to interbreed,
8
A group of organisms of the same species, living in the same area at the same time
9
A group of populations living together and interacting with each other within a given area
10
The environment in which a species normally lives, or the location of a living organism
11
A community and its abiotic environment (i.e. habitat)
12
The study of the relationship between living organisms, or between living organisms and their environment
13
A group of organisms that can potentially interbreed to produce fertile, viable offspring
