Systemic circulation is the circulation of blood through<span> the arteries, capillaries, and veins of the general system.
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An animal cell has a nucleus but no cell wall.
I believe you're looking for "invasive species"
Answer:
For a gene that is expressed in a dominant and recessive pattern, homozygous dominant and heterozygous organisms will look identical (that is, they will have different genotypes but the same phenotype), and the recessive allele will only be observed in homozygous recessive individuals.
Explanation
Answer:
D.
Explanation:
The immune system lowers the chances of bacteria, viruses, and diseases entering your body