Video answering a question about a refrigerator's defrost cycle. This video answers the question of how often does a refrigerator go into defrost. If you have questions about appliances that you want an answer to, leave them in the comment section below.ideo answering a question about a refrigerator's defrost cycle. This video answers the question of how often does a refrigerator go into defrost. If you have questions about appliances that you want an answer to, leave them in the comment section below.
1 Species Fusion-two species in a hybrid zone may have weak reproductive isolating barriers, and the two species may, over time, eventually share a common gene pool. 2  Species Stability/Hybrid Equilibrium-Hybrids are continually produced by the two parent populations in a hybrid zone.
A geographic barrier eg mountain range, river, ocean, desert, can split a species into two populations which can no longer mix with each other.By splitting up a species into â¦ two separate populations a geographic barrier can lead to the formation of a new species. geographic barrier eg mountain range, river, ocean, desert, can split a species into two populations which can no longer mix with each other.