Answer:
C. Mutation.
Explanation:
The mutation is the source of all genetic variation. There are two types of mutations. One is the natural mutation, and another is the artificial mutation. The natural mutation occurs due to the environmental cause, and humans using various mutagens do artificial mutations.
These two types of mutations always bring variation in any organism. This variation can be positive or can be negative too. Natural mutation is not possible to control so that anything can happen. Either positive or negative changes can occur. But in the case of artificial mutation, in 90% cases, positive results come in genetic variation.
C - Organisms, Particles
D- rabbies, ?
Answer:
The marked portion of that document needs to be changed into a portion with upgraded information that will reflect the new classification level.
Explanation:
The Original Classification Authority (OCA) abide by some rules such as:
- The OCA must be designated in writing, another way of designation won't be allowed.
- The OCA creates Security Classification Guides (SCGs) to help others develop classified materials.
- Only a few positions are designated as an OCA such as the President and Secretary of Defense.
Carbon is stored in the biosphere within living or recently dead plants, animals and microorganisms in the ocean and on land. Forests contain 86 percent of the planet's carbon on top of the ground. This biomass is released into the carbon cycle through natural decomposition and respiration.
