True
Mucins exhibit direct microbicidal activities.
Answer:
d
Explanation:
Speciation is the formation of new species as a result of evolution these three stages are separation, adaptation, and reproductive isolation. First Stage: Separation. Speciation usually begins when a part of a population becomes separated from the rest of their species.
d
Answer:
The correct answer is "uranium-238".
Explanation:
Uranium-238, is the most abundant isotope of the element uranium. Uranium-238 has not enough nuclear force to balance electrostatic forces between protons, and as a result, it is a radioactive isotope and its losing energy because of the spontaneous breakdown of its atomic nucleus. Uranium-238 has a half-life of 4.5 billion years and is used as fuel in nuclear reactors as well as for dating purposes.
Answer:
the second one is the correct one
