Scientific explanation has data or statistics that have been tested and experimented to determine outcomes. Stories are subjective information that has no evidence to back up if it’s true or not.
Answer:
Explanation:
Shutterstock. When the molten outer core cools and becomes solid, a very long time in the future, the Earth's magnetic field will disappear. When that happens, compasses will stop pointing north, birds will not know where to fly when they migrate, and the Earth's atmosphere will disappear
Answer: All the given symptoms describes Pertussis.
Explanation:
Pertussis can also be defined as whooping cough or 100 day cough. It is respiratory disease which is highly contagious.
it is caused by the bacteria Bordetella pertussis. It is also known to be uncontrollable as this condition does not allows the person to breathe properly.
If recognized at early stage then antimicrobial like erythromycin can be used to treat it. The symptoms of this disease lasts for a long time and is not cured easily. Its initial stage includes cold, cough and running nose, same as common cold.
I have not learned that yet i wish i could help so sorry though good luck
Answer:
Parentals: PP (purple) and pp (white)
F1: Pp (purple)
Explanation:
When the two parental plants of differing phenotypes (purple or white flowers) cross, the F1 is 100% purple. This result suggests that the parentals were true breeding (homozygous), with purple flowers being the dominant allele.
When the F1 self pollinates, the F2 shows proportions very similar to 3/4 purple and 1/4 white (401/532 ≅ 3/4 and 131/532 ≅ 1/4). The 3:1 phenotypic ratio is typical of the offspring resulting from a cross between two heterozygous individuals.
The results make sense if the genotypes of the different generations are:
Parentals: PP (purple) X pp (white)
F1: Pp (purple)
F2: 1/4 PP, 2/4 Pp, 1/4 pp
