The average atomic mass of an element<span> is the sum of the </span>masses of its isotopes, each multiplied by its natural abundance (the decimal associated with percent of atoms<span> of that </span>element<span> that are of a given isotope).</span>
The two substance that will be produced if lactaid works properly is
Galactose and glucose
<u><em>Explanation</em></u>
- <u><em> </em></u>Lactaid is a natural enzyme that help to break down lactose
- Lactose are sugar found in dairy food like milk,ice cream or cheese into which are breakdown into simple sugar, that is galactose and glucose that are easily digested.
Answer:
D) Mammals are more closely related to birds because they share a more recent common ancestor.
Explanation:
- Mamals, birds, amphibians, reptiles and fishes are vertebrates.
- Vertebrates have the spinal cord surrounded by cartilage or bone.
- Mammals are more closely related to birds because they both are evolved from reptiles.
- Reptiles are tetrapod vertebrates.
