Answer;
-Pure chemical substance and element
Explanation;
-Pure substances are substances that are made of only one type of atom or molecule.A pure substance can be either an element or a compound, but the composition of a pure substance doesn’t vary.
-An element is a pure substance that cannot be broken down into different types of substances by chemical means. All elements are pure substances. An element is composed of a single kind of atom. An atom is the smallest particle of an element that still has all the properties of the element.
-Tungsten is an element and therefore a pure substance.
The trait the phenotype that's masked with a different allele is a recessive.
Answer: 298.9 million years old
Explanation: hope it helps luv ❤✨
You could say DNA is found in both viruses and in living single-celled organisms because DNA is necessary to replicate itself.
