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Hello!! The answer would be A - The SA node. It is known as the "pacemaker" because it initiates the heart's rhythmic contractions. I hope I helped!! Have a great day. :)
Answer: a. rna interference.
Rna interference <span> was known by other
names like <span>co-suppression because
it </span>has become evident that RNAi has immense potential in inhibiting desired
genes by neutralizing targeted mRNA molecules</span> Two types of small ribonucleic acid (RNA) molecules that are central to RNA interference
are miRNA and <span>siRNA. </span>
Answer:
The statement that best describes process of succession after a forest fire is A. Small plants grow but are eventually replaced by larger plants.
Explanation:
The example illustrated in this question is a kind of secondary succession.
Succession can be described as the variations in a particular community or ecosystem over a period of time. Succession has two types which are
- primary succession
- secondary succession
Secondary succession results due to natural disturbances like fire, storms, etc.
In this kind of succession, a natural disaster completely destroys a community leaving behind only barren soil. Over a period of time, Small plants start to grow on this land. Herbaceous plants are the first ones to evolve. Eventually, the larger plants start to grow later and the land becomes revived again.
