C. less dense as it gets colder and less salty
Evaporation of the water is the process that exerts the pull on water molecules that is relayed from leaf to root via cohesion. The pressure of the water present in the leaves becomes less due to evaporation of water. The pressure of water in the roots and lower part of the shoot is high. This gradient of pressure creates a pull on the water molecules present in the roots to move upwards to the leaves to occupy the vacant space. The whole process is called transpiration.
Answer:
crops is a renewable resources, coal, natural gas and oil are not renewable as they will not last forever.
Allele frequency:
Number of times an allele occurs in a gene pool compared with the number of alleles in that pool for the same gene
