Answer:
Cohesion and adhesion of water molecules
Explanation:
Cohesion has to do with the ability of water to adhere together .
The cohesive properties of water which is occasioned by hydrogen bonding between adjacent water molecules allow the column of water to move up through the plant irrespective of the force of gravity as water molecules are evaporating at the leaf surface.
The adhesive properties of water, which means, the attraction between the water molecule and the xylem wall also ensure continuity in the movement of the water column in the xylem.
Hence the cohesive and adhesive properties of water molecules are important for transpiration to occur.
Answer:
Variations are caused by mutation. random mating between organisms.
Explanation:
Both the temperate grasslands and temperate forests experience <u>seasonal climatic changes </u>
Explanation:
Both the temperate grasslands and temperate forests experience experience all the four seasons - spring, summer, winter and fall.
These climatic changes can be observed throughout the year with summer being warm and dry and winter being very cold. The summer temperature averages around 21 degrees centigrade while the winter temperature can go down below freezing levels.
This extremely cold winter leads to shedding of leaves of deciduous trees found in the temperate forests. The grasses in the temperate grasslands also shed and die annually with the roots and new buds protected by the soil during the cold weather.
Answer:
Cells contain DNA that controls the production of proteins. (2) DNA is composed of proteins that carry coded information for how cells function. (3) Proteins are used to produce cells that link amino acids together into DNA. (4) Cells are linked together by proteins to make different kinds of DNA molecules.
Explanation: Hope this helps!! :)
<span>Insertion is a type of mutation which adds nucleotide to an already existing gene sequence. It can lead to genetic disorders due to the change of gene sequence. An example of this genetic disorder is the trisomy 21 or commonly known as Down syndrome. Instead of having 46 cells, those people having this disorder have 47 cells because there is an extra copy of there gene 21.</span>
