Persistent chlorinated hydrocarbon pesticides persist in the environment and accumulate in the foods chain causing harmful effects on the environment including posing a threat to humans health in the long term. Nonpersistent organophosphate pesticides are more toxic than the former but degrade after a short life span. Therefore they cause immediate harm in case one is in contact with them.
The fact that they do not accumulate in the environment, they are more favourable than chlorinated hydrocarbon pesticides. Chlorinated hydrocarbon pesticides will affect several generations due to their accumulation in the environment. However they don't need to be re-applied hence are less expensive
False.
<span>Radiation is the transfer of heat regardless of the presence of atoms or particles.
</span>There are three types of heat transfer or heat propagation; conduction, convection and radiation. Heat transfer is the process by which heat projects externally however, depending on the temperature and pressure. Also called the movement of heat from a low temperatured state which increases as heat progresses.
Conduction is the heat transfer by contact, immediate contact.
<span>Convection is the transfer of heat through air and water.</span>
Answer: Its c offspring develope in pouch.
Explanation:
I took the test
Males<span> have one Y </span>chromosome<span> and one X </span>chromosome<span>, and females have two X </span>chromosomes<span>. </span>
Answer: B, Chloroplasts use carbon dioxide and water to create glucose.
Explanation: The answer is in the formula for photosynthesis:
<em><u>6CO2 + 6H2O</u></em> + light --> C6H12O6 + 6CO2
CO2 (carbon dioxide) and H20 (water) combine to form C6H12O6 (glucose).