Answer:
In the last 60 years, brown tree snakes have become the embodiment of the bad things that can happen when invasive species are introduced in places where they have few predators. Unchecked for many years, the snakes caused the extinction of nearly every native bird species on the Pacific island of Guam.
Answer:
Strong triangular iron strip in plough is known as ploughshare.
Microbes cause tissue damage to their host cell or body in different ways.
1. Microbes can release toxins that can damage the cells and tissues of the host.
2. Microbes can release enzymes that can breakdown the cells and tissues of the host.
3. Microbes can activate certain responses in the host that can make the latter destroy its own tissues. Usually, the immune response of the host cell is disturbed, making the immune system attack the cells of the host itself.
Answer:
Question is incomplete i have added full question with explanation and reaction see attachment.
Answer:
Sinoatrial Node?
Explanation:
Blood pressure drops whenever the vagus nerge is stimulated. In fact, babies have to constantly be monitored for position, becase cranial pressure can stimualte the vagus nerve and cut heart circulation by inhibitng the Sinoatrial node.