In photosynthesis carbon dioxide (CO2) and water (H2O) r â¦ eact chemically and transform into glucose (C6H12O6) and oxygen (O2). This process is driven by the energy of sunlight. An energy then bound chemically in the glucose, which is a primitive type of sugar. to recap: 4 things are needed.or photosynthesis to occur a plant needs water (H2o) carbon dioxide (what we breathe out) and sunlight. Without these things a plant cannot complete photosynthesis. Hope th â¦ is helps.
A stroke is a brain attack. It can happen to anyone at any time. It occurs when blood flow to an area of brain is cut off. When this happens, brain cells are deprived of oxygen and begin to die. When brain cells die during a stroke, abilities controlled by that area of the brain such as memory and muscle control are lost.
1 Stroke is the No. 5 cause of death in the U.S., behind heart disease, cancer, chronic lower respiratory disease, and unintentional injuries. 2  About 130,000 Americans die every year from stroke.3  Every year, 795,000 individuals have a stroke in the United States. 4  Someone in the U.S. dies every 4 minutes from stroke. Someone in the U.S. dies every 4 minutes from stroke. 2  Stroke is the leading cause of disability among adults in the U.S. An estimated 6.8 million (2.8%) of people in the United States are living after having had a stroke, including 3.8 million women and 3 million men.