Correct answer: Always parasitic, contains DNA and RNA, cannot reproduce on their own
A virus is a small microscopic parasite that cannot reproduce on their own, it can only replicate them self by hijacking the host machinery. Most of the viruses contain either DNA or RNA as the genetic material.
There are many viruses that are known to cause diseases to the human, one of the common virus is an influenza virus that causes flu. other example includes Ebola, Hepatitis, Polio virus
The answer is B: 'the smoke that results is toxic'. An example is the burning of domestic garbage, which remains a common practise, particularly in developing countries. This practice can release g<span>reenhouse gases like carbon dioxide and also tiny particles and toxic chemicals that can harm human lungs.</span>
Dehydration synthesis is a process where formation of a water molecule takes place while joining two molecules. Hydrolysis refers to a chemical reaction where breakdown of water molecule takes place. Thus, both the processes are opposite to each other but are related to each other while harnessing energy from the food. During dehydration synthesis the food molecule is formed with extraction of water from the food while during hydrolysis digestion of food particle takes place and water molecule is used in the process.
Answer: 1. a video that shows a large river that has penguin populations on both sides.
Explanation:
Reproductive isolation is a phenomena which occurs when members of the same species becomes separated due to a geographical, physical or behavioral barrier. The members of the same species after separation adapt to changes and this is the basis of speciation or development of new species.
Option 1 is the correct option as the river is the geographical barrier, between the two separated penguin populations.
