Answer is A.
A pH of 7 is neutral. This is what most plants require to grow.
And since the soil is acidic, to make it neutral, we have to add the opposite of an acid- a base. Calcium carbonate is a base.
So, answer is A.
A double helix structure that consist of two polynucleotide chains.
A DNA molecule consists of two strands that wind around each to form a double helix. Double-stranded DNA consists of two polynucleotide chains.
The answer is D.) Some environmental change has happened that favors the red flowers. The reason is, this is the most logical answer, the other are close, but D.) makes the most sense.
The layer which protects the earth is referred to as magnetosphere.
Magnetosphere is termed as the region of space which surrounds astronomical object by way of magnetic fields.
They create planets which generates planets in magnetic field which include fields where they can occur in stars through interaction of plasma.
Magnetosphere blows away particles from the earth and also from the sun.
The answer to this is NATURAL SELECTION. From the given scenario above, this is classified to be a natural selection because of the changes made by the individuals in order to adapt the presence of this fungal disease. When we say natural selection, this is the ability of an organism to adapt to a certain environment in order to survive. This is according to Charles Darwin which has been the source for the study of evolution.