Answer:
The correct option is A
Explanation:
To determine if water temperature has an effect on weathering of sedimentary rocks, different number (perhaps three) of identical sedimentary rocks should be obtained and then individually placed in different water temperatures (with at least one of the "water volumes" used for each having a temperature close to the room temperature so as to be used as the control).
Thus, each of the identical sedimentary rock can be broken into three and placed individually; as in one part of the rock in 20 °C of water (control), another part of the rock in 40 °C and another in 60 °C of water.
This above procedure should be repeated for the remaining two other identical sedimentary rock to confirm if there is any effect.
Transport proteins- an example of a protein in the plasma membrane is integral proteins, which main function is to transport molecules across the membrane. Hope this helps :)
Answer: Adenine, Guanine, Thymine or Uracil and Cytosine
Explanation: Nitrogenous bases are one of the major constituents of nucleic acids. They contain nitrogen and act as bases in reactions.
Answer:
B. Pesticides from the farm up the road made their way into the pond and poisoned the fish.
Explanation:
The first step I would use is to use a magnet to remove the iron filings. This is because only metal is attracted to magnets. I would then use a sieve to filter the sand and salt from the gravel. This is because the gravel will have a larger diameter than the sand and salt particles, and will stay behind while the salt and sand will pass through the sieve. Finally, I would remove the salt from the sand by placing the mixture in water. The sand will tend to sink to the bottom while the salt will dissolve into solution.