Like all other reptiles, birds have scales. Also, birds lay eggs like other reptiles.
Every person has two copies of each gene, one inherited from each parent. Most genes are the same in all people, but a small number of genes (less than 1 percent of the total) are slightly different between people. Alleles are forms of the same gene with small differences in their sequence of DNA bases. These small differences contribute to each person’s unique physical features.
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Answer:
A frogs heart has 3 chambers. Two atria and a single ventricle.
Answer:
sandy soil
Explanation:
A layer of pale, sandy soil lacking clay and iron is likely to be found in horizon E.