I believe it is the "myelin sheath." White matter = myelinated (has myelin sheath), while gray matter = unmyelinated (no myelin sheath)!
The viral participle and the host cell membrane. A hole forms in the cell membrane, then the virus participle or its genetic contents are released into the host cell, where replication of the viral genome may commence.
Answer: Option D
Explanation:
The control of the non-crop vegetation is necessary in order to maintain the fertility of the soil.
The non crop vegetation should be cut in order to maintain the availability of the nutrients, water for the crop vegetation.
Example: The plant named eucalyptus has its roots deep inside the ground. So there is no other plant grown along with this plant because it will not get enough water for its growth.
Likewise the non crop vegetation should be stopped from growing to maintain the ecological balance.
The answer is C jsjsnanjansb
