Answer: Option (a) is the correct answer.
Explanation:
Photosynthesis is defined as a chemical process in which plants tend to make their own food in the presence of sunlight, water and carbon dioxide.
During this process, product formed by the plants is glucose and oxygen.
The chemical reaction equation for photosynthesis is as follows.

Therefore, we can conclude that out of the given options the correct equation is as follows.

Just treat the bead as a point charge.
E = kq/r^2, and E points away from the center of the sphere since the charge is positive.
Answer:
Kinetic energy is the energy obtained from movement while potential energy is the energy in something when it is at a height or has been manipulated in some way; it has work done to it.
Explanation:
Kinetic energy is, like I said, energy gained through movement or action. When an object stops moving, it converts into a different type of energy. Energy cannot be destroyed or created. An object with potential energy has a reference. A reference determines how high it is. The higher and heavier an object is, the more potential energy it has.
Hope this helps!
Answer:

Explanation:
The force of friction change is the pavement is dry or wet so to determine the force of friction:







Dry pavement

Wet pavement


Solve and reduce the factor so:




Answer:
NASA sees direct proof for the hole in the ozone layer getting smaller .
Explanation:
According to an research in the year 2017 ' NASA confirmed that size of the ozone hole n September was smaller as it was in earlier three decades ago . They found that chlorine from chlorofluorocarbons (CFC) are reducing which results in the depletion of hole in the ozone layer.
Ozone layer plays an very important role in protecting life on earth from very dangerous rays which cause many deadly diseases and many other problems. Since the world banding the substances which cause ozone depletion , scientists are thinking that by the year of 2070 the hole can recover its size level that it was in year of 1980.