Passive is when the channels don't need energy to do so and active is when they need energy
The main portion of the cell is called the soma or cell body. It contains the nucleus, which in turn contains the genetic material in the form of chromosomes. Neurons have a large number of extensions called dendrites.
Answer:
It's AUC.
Thymine is substituted by Uracile in RNA and it's complementary to Adenine. Citosine is complementary to Guanine
The answer is option B "declining number and variety of the species in an area." Biodiversity is a variety of life for example a ecosystem has many species which makes it a biodiversity. Now a loss of a biodiversity would be loosing a huge amount of species in that area or ecosystem which would mean the answer is option B.
Hope this helps.