Answer:
Water (H2O)
Explanation:
Light reactions of photosynthesis release oxygen as a by-product. In the presence of sunlight, photolysis of water molecules occurs. Splitting of two water molecules obtains four electrons, four protons, and molecular oxygen. The oxygen-evolving complex, also called the water-splitting complex is associated with photosystem II (PS II). Splitting of water occurs in the oxygen evolving complex and the released electrons are passed one at a time to the reaction center of PS II. Therefore, a water molecule serves as a source of oxygen released during photosynthesis.
Answer:
Fluid lava (which is less viscous because it has less silica content) flows much further than viscous lava (that is high in silica content). Therefore, this types of lava forms shield volcanoes – low slopes and low height- because they flow over longer distances before they cool. Viscous lava from composite volcanoes that are high in height and have steep slopes.Explanation:
Answer: The troubling reality of humanity's over-sized and still expanding population and create highly effective programs to solve the problem. Our efforts focus on specific attitudinal drivers of ongoing rapid population growth.
Explanation: In fact, world population growth remains totally unsustainable over 230,000 people are added to world population each day. That is a net gain - births minus deaths. But few people understand the true drivers of this increasing world population. Even fewer know how to effectively intervene. Long established and widely practiced social norms low status of women & girls, bias against modern contraception, and large ideal family size are the strongest drivers rapid growth of the population. If somebody tries to tell you that population growth is "slowing down," ask them to explain the graphic on the left.
