Mass transit can help reduce air pollution in urban cities because there are fewer cars on the roads, creating less pollution.
When red blood cells are in a higher concentrated solution, water flows out of the cells faster than it comes in. This results in crenation or shrivelling of the cell.
A. Heat will not flow because there is no temperature difference between the substances.
(The 3 examples are:)
~ CO2 from burning fossil fuels
~ gas (methane) leaks from underground gas pipes
<span>~ methane from rotting material in landfills
</span>
(Other ones)
<span>~ combustion of fossil fuels (oil, coal, and gas)</span>
<span>~ deforestation (decreasing amount of plants that remove CO2 from the atmosphere)</span>
<span><span>~ industrial production that uses petroleum based products (mineral/metal production)
</span></span>
Answer:
Correct choice should be:
"SGSG"
Explanation:
The cell cycle consists of G1, S, G2 and M phase. The former three phases include the interphase and M phase is the dividing phase of cell . G1 prepares cell for DNA synthesis. S phase is the phase where DNA replication takes place. G2 phase prepares cell for cell division or M phase.
G1 phase preceeds replication or S phase and G1 phase licences DNA replication.
During other phases of cell cycle, ORC complex masks origin of replication. ORC phosphorylation takes place at S phase, which removes this omplex and unmasks origin of repication site so that replication machinery can bind to it.
DNA helicase activation: S phase
DNA helicase deposition on DNA at the replication origins: G phase (actually G1)
ORC phosphorylation: S phase
Licensing of replication origins : G phase (actually G1)
Hence correct choice should be:
SGSG
