Answer: it is difficult because it is necessary to understand some concepts used in a system. For example what is a boundary, and environment which can be positive or negative, etc. A sample could be the course OpenLearn that provides an example of Computing & IT.
Explanation:
The Universe is defined to be the sum total of everything that we know about: stars, galaxies, clusters, superclusters, voids, etc.
Cosmology is the study of the structure and evolution of the Universe.
It is a subject of great current interest, as the Hubble Space Telescope and other new instruments have recently helped astronomers shed light on many important questions.
There have been many theories about the Universe, but they generally all share one fundamental postulate, the cosmological principle, which has two parts. First, the Universe must be isotropic (the same in every direction).
For example, the Hubble deep field images, extending 12 Gly away, for two completely different directions, are remarkably similar:
A. -50 degrees, it may also be 60 degrees but -50 is much more harsh
By ensuring a proper match of personal and organizational values
Answer:
The answer to your question is: Proteins
Explanation:
Ammonia, nitrites and nitrates are part of the Nitrogen cycle where plants absorb nitrogen, when animals eat vegetables, adquiere nitrogen as proteins.
A) nitrates
B) proteins This is the correct answer.
C) nitrites
D) ammonia
