Answer:
A
Explanation:
it describes the verb with ing, and doesnt have because in it.
The fermenter is sealed off from the air except for a long narrow vent pipe, which allows carbon dioxide to escape from the fermenter. Since there is a constant flow of CO2 through the pipe, outside air is prevented from entering the fermenter, which reduces the threat of contamination by stray yeasts.
9, 18, and 27 are three numbers that have a GCF of 9
The characteristics of the species being talked about here are:
1. Allopatric speciation
2. Behaviourally isolated
The given excerpt talks about a particular species of Salamander in California. It talks about how different parts of the species moved to the different parts of the world. It also tells us how mating was incompatible after this movement.
Allopatric speciation takes place when organisms of the same species are separated from each other or "isolated" geographically which often prevents them from breeding.
Therefore, The characteristics of the species being talked about here are:
- Allopatric speciation
- Behaviourally isolated
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