Answer:
You drove through Iowa in the spring and noticed that along a stretch of several kilometers, every third fence post had a male red-winged blackbird perched on it defending its nesting territory. This is an example of <u>uniform dispersion.</u>
Explanation:
There are usually three dispersion patterns :
- Clumping
- Uniform dispersion
- Random dispersion
Clumping is the most common.
Uniform dispersion occurs when
- resources are scarce
- Individuals are evenly spaced in a habitat
- Due to competition or territorial behavior
While Random dispersion occurs when resources are plentiful.
Hence ,This is an example of <u>uniform dispersion.</u>
<span>There are three major types of blood vessels: the arteries, which carry the blood away from the heart; the capillaries, which enable the actual exchange of water and chemicals between the blood and the tissues; and the veins, which carry blood from the capillaries back toward the heart</span>
The right answer is B.
Cholera vaccination is only recommended for staff who have to intervene with patients in an epidemic situation. In all other cases, effective prevention is provided by good personal hygiene (washing hands) and food.
It is also important to know that this vaccine does not protect permanently: It protects only about 90% within 6 months, then to 50% within 3 years.
