Two key characteristics of a good scientific investigation are hypothesis and observation of whatever organism your studying.
<span>Kepler’s harmonic law is the
third law of the Planetary Motion. He discovered this after ten years that
there is a relation between the time of a planet’s orbit and its distance from
the sun. The harmonic law states that <u>the squares of the orbital periods of
the planets around the Sun are proportional to the cubes of the planet’s orbital
period</u>. <u> </u> </span>
Answer:
All the arteries except pulmonary artery carry pure blood..it is so because blood flows with a high pressure and speed And because Arteries are situated deeper under the skin have thick-walled with Narrow lumen(cavity) and pulmonary artery carries deoxygenated blood i.e without oxygen..
Explanation:
lumen means Empty space within an object(solid)
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<span>A heterozygous individual is if a mutation occurs in just one copy of the gene.
If both copies of the gene are mutated than the individual is homozygous</span>
A male drake will result with XY chromosome and a female drake would have XX chromosomes
