Answer:
Explanation:
A virus is a nucleoprotein and the genetic material is infectious. Speaking in strictly general terms, viruses infecting plants have single-stranded RNA. On the other hand, viruses that infect animals have either single or double-stranded RNA or they might have double-stranded DNA.
<u>Answer</u>:
16 - light
17 - 
18 - 
19 - 
20 - sugar
The image describes the process of photosynthesis and the production of sugar through the Calvin cycle. Light is the energy source that drives this process through which, together with water molecules, chemical energy known as ATP is produced. This and NADPH, which is also produced during photosynthesis, are used to drive the Calvi Cycle. Here, by using atmospheric , sugars are produced. These are vital to the survival and growth of the plant. Oxygen is also released into the atmosphere as a result of photosynthesis.
Answer:
Option B, weight greater than your true weight
Explanation:
When a person stand on a scale in an elevator, his inertia tries to remain constant and stable. Thus when a lift starts moving upward it presses against the feet of that person in order to lift him/her up. In doing so an apparent weight is applied on the person which do not change with speed and it is due to this weight that scale shows a higher reading when elevator moves up.
Hence, option B is correct.
The correct option is this: TWO DRAGONFLY SPECIES REGULARLY MATE BUT THEIR GAMETES ARE INCOMPATIBLE.
In biology, there are different types of reproductive barriers, one of these is prezygotic barrier. A prezygotic barrier is a kind of mechanism that prevent reproduction from occurring by blocking fertilization. In this case, the concerned species will be mating together, but their gametes will not be compatible and thus, zygote will not be formed.
A postzygotic barrier on the other hand is said to occur when the reproduction process is blocked after the formation of zygote or after fertilization has taken place. A good example of this is an hybrid mule that is sterile and can not reproduce.
