One major drawback of using experiments is that the outcome might not be the outcome that is desired or another one is that it has a low realism and that experiments wont find out or specify 'why' the outcome occurred
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it means that bad roads are the main problem behind the accident .many people are died due to accidents .this is exactly done by the bad roads
Answer: it’s A.true
Explanation: Trophic cascade, an ecological phenomenon triggered by the addition or removal of top predators and involving reciprocal changes in the relative populations of predator and prey through a food chain, which often results in dramatic changes in ecosystem structure and nutrient cycling.
Answer:
Some of the challenges faced by developing countries with regard to health care are the increasing number of people that are aging and will be aging in the coming years. The World Health Organization consider that the number of old people, 65 years old and older, will increase from 249 million to 690 from the year 2000 to the year 2030. This will impact directly the health budget in developed countries in South America, Asia, and Africa because of the elderly demand so much medical attention as they are aging. The World Health Organization suggest these countries focus on preventing campaigns that inform people to take care of their health and supports a healthy living style to prevent chronic diseases. One example of this action could be the World Health Organization campaign of 2002 called "Innovative Care for Chronic Conditions," that focuses on prevention instead of resolution.
Answer:
The settlers, who arrived in 1587, disappeared in 1590, leaving behind only two clues: the words "Croatoan" carved into a fort's gatepost and "Cro" etched into a tree. Theories about the disappearance have ranged from an annihilating disease to a violent rampage by local Native American tribes.
Explanation: