Answer:
Scientists are studying cause(s) and risk factors in an effort to find better ways to manage and reduce the chances of a person having ADHD. The cause(s) and risk factors for ADHD are unknown, but current research shows that genetics plays an important role. Recent studies of twins link genes with ADHD.1
In addition to genetics, scientists are studying other possible causes and risk factors including:
Brain injury
Exposure to environmental (e.g., lead) during pregnancy or at a young age
Alcohol and tobacco use during pregnancy
Premature delivery
Low birth weight
Research does not support the popularly held views that ADHD is caused by eating too much sugar, watching too much television, parenting, or social and environmental factors such as poverty or family chaos. Of course, many things, including these, might make symptoms worse, especially in certain people. But the evidence is not strong enough to conclude that they are the main causes of ADHD.
Explanation:
Answer:
After 1818, the Oregon Country was controlled
solely by the United States.
solely by Great Britain.
jointly by United States and Great Britain.
jointly by the United States and Spain.Explanation:
Expose your food to air – and in particular the oxygen in the air – and your shelf life will reduce. It's the oxygen in the air that allows bacteria and other bugs to grow and spoil the food. Or a process called oxidation can cause foods to go off – such as fats and oils becoming rancid.
Answer:
D. Establish her level of responsiveness
Explanation:
