Answer:
Homologous structures provide evidence for common ancestry, while analogous structures show that similar selective pressures can produce similar adaptations (beneficial features). Similarities and differences among biological molecules (e.g., in the DNA sequence of genes) can be used to determine species' relatedness.
Explanation:
Answer:
Embryo
Explanation:
An embryo refers to the early stage of development of a multi-cellular organism and it occurs just immediately after fertilization. This development often continues through the formation of cell, tissues, organs.
An embryo is formed from the fertilization of a female ova by a male sperm.
Answer:
B.) Smoking tobacco products or inhaling second-hand smoke
Explanation:
It can cause lung cancer
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