Potassium-40 has a half life of 1.251×billion<span> years</span><span>. To determine the percentage potassium-40 remaining after 3.9 billion years, divide
3.9 by 1.251, = 3.12.
This is the number of times the original amount of potassium-40 reduces by 50%. The remaining percentage is therefore 100%/(3.12 * 2) = 16.03%.</span>
Answer:
True
Explanation:
The mucous membrane "conjunctiva" line the lower and upper portion of the eyelid of eye. It covers the white portion of eye ball i.e the anterior surface and also lubricates the eye. Conjunctiva membrane is made up of squamous epithelium which is mixed with mucus cell which not only cover the inner portion of lower & upper eyelid and anterior surface of eye but also cover the visible part of sclera and through the tears (lacrimal gland) prevent eyes from drying.
Hence the given statement is true.
Answer:
Codominance
Explanation:
Codominance is the condition in which both the alleles of a trait are dominant and are equally expressed when comes together in the offspring. For example in ABO blood grouping in humans A and B allele are dominant so when they both come together in an offspring then they produce AB blood group in that offspring.
Here when true-breeding strains of salamander having yellow and red stripes are crossed together they produce offsprings having both yellow and red stripes that shows that the traits are codominant.
Therefore the pattern of codominance is most consistent with this observation.