Explanation:
Psi packaging Element is a cis-acting RNA element identified in the genomes of the retroviruses Human immunodeficiency virus (HIV) and Simian immunodeficiency virus (SIV) It is involved in regulating encapsidation of the retroviral RNA, an essential step in replication.
Answer:
what do you need to know?
Explanation:
I learned about this in bio last year, maybe I can help
Explanation:
The energy of the earth's interior is known as the earth's internal energy. This powers the internal processes within the earth.
- This energy is very important in the rock cycle for the formation of both igneous and metamorphic rock.
- The energy is a product of frictional heating, radioactive decay of isotopes and heat that acreted when the earth was forming.
- The internal engine is responsible for mantle convection in which molten rock from within the earth rises to the surface and denser slabs of the lithosphere falls back within.
- It is responsible for the heating of sedimentary rocks to form metamorphic rocks around subduction zones.
Learn more:
Mantle convection brainly.com/question/9582362
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When the temperature reaches 0˚C (32˚F), the top layer of the lake freezes and turns into ice. In solid form, water molecules are less dense and thus ice floats on the top of the lake.
This solid barrier prevents any wind-induced mixing as well as protects the relatively warm water underneath. Furthermore, light is also blocked so that photosynthesis is inhibited during this period. As the lake water is separated from the atmosphere, no direct oxygen diffusion occurs.
All these factors together causes a more even distribution of nutrients and gases in a lake in winter.
Answer:
The answer is
C. Elements combine to form compounds in organisms and nonliving substances.
