For the first question, it's D. And the second question it's C.
Transfer ribonucleic acid is a type of RNA molecule that helps decode a messenger RNA sequence into a protein. RNAs function at specific sites in the ribosome during translation, which is a process that synthesizes a protein from an RNA molecule.
E-coli is a significant virus
The common source of groundwater pollution is done by spraying crop fields with pesticides.
Answer: Option C
<u>Explanation:</u>
The ground water pollution is the mixing up of pollutant in the water which lies below the ground and is potable in nature. This pollution has the commonest source of pollutant by the pesticides.
The crop fields when sprayed for pests with pesticides in order to kill the pests on crop, contaminates the crop as well as the ground at the same time. These are its disadvantages.
The ground being contaminated on ploughing or by leaching gets the pollutant into the water table. Plant on the other hand on decaying leaves the pesticide into the ground which in turns goes into the under ground water.
Passive transport means the cell does not have to spend energy to move gasses and fluids. the gasses or liquids go from a higher concentration to a place of lower concentration. Think about shaking a can of soda. There's a lot of pressure that builds up in the soda. When you open the soda, all of the pressure escapes to an area of lower pressure outside of the can. This is called diffusion. Osmosis is another form of passive transport. For example, in water osmosis, the water goes from a less salty solution to a more salty solution.
The correct answer is A. Diffusion and osmosis.
hope this helps =)
