Rainforests are principally responsible for global oxygen turnover true or false

False

Explanation:

Rainforests are very important for global oxygen movement, but they are not the main element for oxygen movement.

Seaweed is the real lung of the world, it is primarily responsible for the global movement of oxygen as it produces more oxygen through photosynthesis than it needs in breathing, and the excess is released into the environment. Rainforests release much less oxygen into the atmosphere worldwide, as most of the gas produced is consumed in the forests themselves. However, rainforests are extremely important and should not be destroyed.

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6