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Answer:
The inner moons are small dark bodies that share common properties and origins with Uranus's rings. ... William Herschel discovered the first two moons, Titania and Oberon, in 1787. The other three ellipsoidal moons were discovered in 1851 by William Lassell (Ariel and Umbriel) and in 1948 by Gerard Kuiper (Miranda).
Answer:
The main difference between relative dating and radiometric dating is that relative dating is the method used to determine the age of rock layers according to their relative depth whereas radiometric dating is the method used to determine the absolute age with the use of decaying products of the natural radioactive. Also, absolute dating is more precise than relative dating because it tells the exact age of the fossils. Both are ultimately based on the fossils found in the strata.
Answer:
Option (3)
Explanation:
Soil tillage is usually defined as the preparation and modification of soil by digging, overturning and stirring it, in order to grow crops. This has become essential for cultivation but it has many negative effects, as it leads to the erosion of soil particles, degrades the water quality, reduces the percolation of water into the subsurface, organic materials present in the soil are also decreased, and also the pore spaces between the materials also decreases.
Soil tillage has no impact on the color of the soil. It does not lead to the changing of the color. The soil attains its color depending on the mineral it comprises.
Thus, the correct answer is option (3).
Answer:
Contains large polytene chromosome that permit visual inspection of genomic events.
Were used to study the genetic effects of mutations.
Were used to establish the concept of chromosomal inheritance.
Explanation:
<em>Drosophila melanogaster </em>is a model organism that is used by scientists to study the genes and effect of a mutation on the genes. Drosophila is used as a model organism as it has a very short life cycle and the offspring can be produced in a short duration of time.
Because of these characteristics, Thomas Hunt Morgan wanted to study the factors of inheritance on the <em>Drosophila</em> and concluded in the form of the chromosomal theory of inheritance by the effect of mutation on genes that lead to linkage mapping.
Also, the salivary gland of fruit fly contains the polytene chromosome which allows us to look into the gene events.
Thus, the selected options are correct.