Answer:
O Cell membrane: surrounds a cell and allows substances to pass in and out
Explanation:
Cell membrane is also called plasma membrane. Cell membrane is the boundary of the cell which helps in the protection of the cell from external environment. Cell membrane is a semipermeable membrane which has small pores that allows substances such as water, glucose, Sodium ion, oxygen and carbondioxide etc to pass through it.
Photochemical smog results from automobile pollutants reacting with ultraviolet light from the sun. <span>Nitrogen oxides released from the automobile are introduced into the atmosphere reacts with sunlight to produce singular oxygen atoms. Oxygen atoms then combine with molecular oxygen to produce ozone which is one of the components of photochemical smog.</span>
Answer:
Earth takes in thermal energy from the Sun in a process called THERMAL RADIATION.
Sunlight strikes Earth's surface at different angles. This angle is called the angle of INCIDENCE.
Explanation:
It is thermal radiation because thermal radiation refer to process where electromagnetic waves are emitted from a body or matter whose temperature is higher than zero. The Earth take in thermal energy from the sun as a result of thermal radiation.
Angle of incidence is the angle between a ray of light and the surface of it's perpendicular direction. The sunlight strike the Earth surface at an angle called angle of incidence.
Medulla of oblangata (answer C) is part of the brain which is affected of the patient who complain of breathing problems . Medulla of oblangata is a vital center which control visceral activities such as breathing,heart rates,blood pressure, swallowing and vomiting.