Answer:
Explanation:
Rainforests are the sources of minerals, fruits and vegetables. This is because of the fact that the region acquires an annual rainfall of 250 and 450 centimeters. This supports the growth of diversity of floral species like sugarcanes, cinnamon, rubber, medicine and pineapples. Due to the availability of appropriate rainfall the region exhibit highly fertile soil which can support the agricultural practices. The region is also suitable for the mining of inorganic minerals as it is not completely inhabited by the human population therefore, the society will remain protected against the mining hazards. It is also ideal for the construction as the land will be occupied with aesthetic beauty of nature.
On the basis of above reasons the humans have impacted the rainforests on large scale. Therefore, the statement, Humans have impacted the rainforests through mining, agriculture, and construction. is true.
Answer:
The mark called Rifling might link the bullet to a specific weapon.
These are Patent fingerprints.
Explanation:
Modern-day handguns are produced of a particular blueprint that determines their specifications. One major characteristics trait of this specification is known as Rifling.
Rifling is an act or process of making the grooves in a rifled cannon or gun barrel. The system of grooves in a rifled gun barrel in which one side of the groove is made deeper than the other side to facilitate loading with shots having projections is enough to determine what brand/model of specific weapon is being used.
The only type of fingerprint that can be collected through such a crime scene in a blood smear is Patent fingerprints. This type of fingerprint is collected by using a photographic technique that uses high resolutions & a forensic measuring scale.
Answer:
The letter B is the right answer.
Explanation:
The main objective of the hardin and Weinberg equilibrium is to determine how the allelic frequencies change within a population.
In 1908, Godfrey H. Hardy (1877-1947) and the German physician, Wilhem Weinberg, proposed that if no evolutionary factors act on a given population, the frequencies of their alleles would remain unchanged for several generations. This proposal became known as Hardy-Weinberg's Law (or theorem) or principle of gene balance.
According to this law, the necessary conditions for a population to reach equilibrium are:
a) The population must be large, so that all possible intersections occur.
b) The population must be panmatic (from the Greek pan, all, and from the Latin miscere, mix), that is, the crossings must be carried out randomly, without preconditions.
Within these conditions, without mutation, migration or selection, there will be a genetic balance. Over the generations, genes will not change.
Usually, when mutations cause major changes in the external appearance of a population, the selection mode is how well that new color blends in with its environment. It it blends well, the animal will be hidden better from predators and survive.
Answer: b. Bacillus megaterium
d. Staphylococcus epidermidis
Explanation:
a. Pseudomonas putida is a Gram-negative, rod-shaped bacteria.
b. Bacillus megaterium is a rod-like, Gram-positive bacteria.
c. Escherichia coli is a Gram negative, rod shaped bacteria.
d. Staphylococcus epidermidis are gram positive rods, arranged in grape-like clusters.