Answer: a. Secondary
Explanation:
Once soil is already present all you need are animals to re establish the ecosystem
Answer:
true
Explanation:
This generally is due to either a lack of oxygen in the blood or extremely cold temperatures. When the skin becomes a bluish color, the symptom is called cyanosis. Most commonly, blue hands are caused by a lack of oxygen in the blood.
The changing species concept has affected classification systems by distinguishing one species from the other. It has the effect of making to appear that species and their distinctive attributes are external and fixed. The reason for that because o the evolutionary process they have undergone.
Te answer is the Arctic fox
A nervous or anxious dog will exhibit the following body language signs to communicate its state:
Flattened ears
Hunched back
Tail between legs
Nose lick
All of these signs show that the dog feels nervous, and will attack if it is pushed further. If the tension is released, you will see the dog take an exaggerated yawn to relieve itself.
