The correct answer is human activity.
The Yellowstone national park is one of the natural, which had a high number of wolf population. In late 1800s, the agricultural lands were spread nearby the Yellowstone ranges, the agricultural lands were present in the predation range of the wolf. As the agricultural land was in the predation zone of wolf, the wolves from the forests used to come in the agricultural land and destroy live stock. In order to protect live stock, the local people started killing wolves and even they started poisoning them, which was the major reason for the declination in the number of wolves in early 1900s.
Answer:
What is gene therapy?
Gene therapy is a medical field which focuses on the genetic modification of cells to produce a therapeutic effect or the treatment of disease by repairing or reconstructing defective genetic material.
Why does it not work well in the real world?
A gene can't easily be inserted directly into your cells.
Answer:
1. fossils
2. bottom
I don't know the answer to 3, but I hope this helps! :)
The ocean does not influence wind speed and direction. The currents in the ocean are caused by wind speed and direction. The tides in the ocean are influenced by the phases of the moon.