Answer:
c) matter in an ecosystem flows in one direction and is never reused.
Explanation:
A is true
Explanation:
the last option is the correct answer
Answer:
Air particles are a mixture of solids and liquids that are microscopically tiny and suspended by air currents. It can stay in the atmosphere for a few hours to a month or two. Their constituents can be various harmful substances such as heavy metals - lead, nickel, arsenic, cadmium or polycyclic aromatic hydrocarbons
Explanation:
Air particles, nitrogen dioxide and ground-level ozone are now considered to be the three most polluting substances in human health. Exposure during peak concentration and long-term exposure to these pollutants can cause damage from respiratory distress to premature death.
Answer:
The answer is Cryptogams and Phanerogams.
Explanation:
- <u><em>The kingdom Plantae is divided into two subkingdoms: Cryptogamae and Phanerogamae</em></u>