Answer:
The correct answer is "9 cycles".
Explanation:
The minimum number of cycles necessary to replicate a fragment of DNA over 500 times is 9 cycles. In Polymerase Chain Reaction (PCR) method, the fragments of DNA are doubled in each cycle. This means that after "n" cycles, the total number of fragments is given by the equation 2^n. In this case, after 9 cycles a total of 512 DNA fragments will be obtained, because 2^9 is equal to 512.
C. decomposer
C. from other organisms
The topsoil is the upper and outermost layer of soil, usually the top 2 inches to 8 inches. It contains the highest concentration of organic matter and microorganisms. Topsoil is used as the medium for all plant growth, whether it is a lawn, garden or prairie.
Answer:
Wind
Explanation:
Commonly, a flower that uses wind as dispersion, tend to be:
Small
White of light colors
Produces a lot of pollen
Inconspicuous or indistinct
The reason behan the reason behind that is that they don't need to attract attention, they just need the wind to get rid of the flower and thus achieve propagation.
The answer is B. Acceleration
Acceleration definition- In mechanics, acceleration is the rate of change of the velocity of an object with respect to time. Accelerations are vector quantities. The orientation of an object's acceleration is given by the orientation of the net force acting on that object.
