Answer:
Increased fossil fuel use has increased atmospheric carbon dioxide.
Explanation:
Burning fossil fuels increases the amount of CO₂ in air, which is unhealthy.
It was not until the year of 1952!
it allows for nutrients to come into the cell using passive tranport aka moving anything on a gradient without the use of energy (ATP).
Answer:
Sun
Explanation:
Sun is the only star in our solar system, and planets orbit around it. Our solar system is the part of Milky way (located in one of the outer bands of the Milky way), and the Milky way is the part of the Universe (Universe is made up of billions of galaxies, and Milky way is one of those galaxies). Hence, in the given options, the Sun is the part of all of the other options given.
Endorphins are brain chemicals
known as neurotransmitters which are released when the body feels a certain
amount of stress and pain. Endorphins alter the communication of pain in the
body by interacting with the opiate receptors and blocking the synapse so that signals
cannot be sent to the brain in order to reduce an individual perception of pain.
