An enormous cloud of gas and dust that contracts due to gravity and forms stars is called a nebula.
Answer:
The living components of the environment are known as biotic factors
Explanation:
Biotic factors include plants, animals, and micro-organisms. The non-living components of the environment are known as abiotic factors. Abiotic factors include things such as rocks,water,soil,light,rocks etc...
Explanation:
<u>System</u> is a combination of several organs that perform together for a common function.
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B. subcutaneous skin layer
<span>each set of three nitrogen bases representing an amino acid is referred to as a condon.</span>