The answer would be C, double fertilization produces a triploid zygote and a tripped endosperm!
The correct answer is "limited prey is driving the bears to seek food in human settlements".
Due to the warming of the Arctic waters, the ice is melting, resulting in a serious decline of floating winter ice. Polar bears need these floating parts of ice to hunt, therefore this new situation limits the hunting opportunities of the bears. That is why polar bears are driven to human settlements to look for food.
Answer:
D. El Parque Nacional Yellowstone pronto estará bajo un nuevo liderazgo
An environmental scientist might study the effect of soil pollution on plant growth. This is true.
Hope this helped :)