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Anon25 [30]
4 years ago
13

What do I already know about chemical and physical properties and changes? Identifying Pure Substances Which of the following is

a pure substance? Select all that apply.
A. air
B. distilled water
C. iron sulfide
D. oxygen gas
E. seawater
F. sodium chloride​
Biology
1 answer:
Lubov Fominskaja [6]4 years ago
4 0

Answer: db a

Explanation:

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Suppose a population is carrying a condition controlled by two alleles: A (dominant) and a (recessive). Only homozygous individu
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