Answer:
The percentage of people in Botswana that have HIV is 24. 83 percent .
Explanation:
Lesotho and Swaziland are the only country who is higher than Botswana in terms of terms of HIV prevalence rate in the world between adults aged from 15 to 49 years .
This condition has led to a major depletion in Botswana's workforce, because a good number of productive adults (18 to 50) developed AIDS and are unable to work .
The ductus arteriosus allows fetal blood to move from the pulmonary trunk into the aorta. The ductus venosus on the other hand is a fetal vessel that transports blood from the umbilical vein to the inferior venacava. Ductus arteriosus is a blood vessel connecting the main pulmonary artery to the proximal descending aorta. It allows most of the blood from the right ventricle to bypass the fetus's fluid-filled non-functioning lungs.
Answer:
The fossil record provides evidence of a common ancestor to many species. A fossil record provides the confirmation of the typical progenitor and its numerous species. A fossil is known as the remaining parts of a certain living life.
<span>Carrying capacity is the maximum number of individuals in a population that an ecosystem can support. Answer:B It is the </span><span>maximum number of a species an environment can support</span><span>
This capacity can vary from year to year and </span>depends on many factors: food, space, resting or nesting sites, water, soil quality.
The answer is competition.
Competition is an interaction between organisms. If resources, such as food, water, sunlight, territory, are limited and several species depend on these resources, then, they must compete with other species to gain the resources. So, if predators are present, this means that they will maintain the size of prey population on some optimal level. With fewer individuals in the population, there will be less competition for resources.
Therefore, <span>In natural ecosystems, the presence of predators lessens the effects of <u>competition</u> among the prey.</span>
