Answer:
Continental Drift
Explanation:
2 very similar organisms on separate continents mean they most likely lived in the same place in the past and evolved over time while the continents drifted apart
A mitotic cell<span> cycle in which </span>mitosis<span> is completed </span>but<span> cytokinesis </span>does not occur,resulting<span> in a </span>cell<span> containing multiple nuclei each with a chromosomal complement of the original ploidy (usually 2N).</span>
The cell grows and the dna is duplicated
Answer:
The question is incomplete, the missing part i.e. the environmental change is:
(A) biomagnification
(B) acid rain
(C) eutrophication
The answers are:
1. Acid rain- Chemicals react with water and oxygen that enter water systems.
2. Eutrophication- Nutrients in excessive amounts enter water systems, causing algal bloom.
3. Biomagnification- A high concentration of toxic chemicals is present in the bodies of animals at the highest trophic levels
Explanation:
1. Acid rain is an environmental disorder in which rainfall becomes acidic due to pollution. The pollution is as a result of the release of gaseous chemicals e.g sulfur, nitrogen oxide, which are produced by industries, into the atmosphere. These chemicals then react with water in the atmosphere to form acidic solutions, which then falls back as rain. Hence, chemicals reacting with water and oxygen that enter water systems describes ACID RAIN.
2. Eutrophication is the pollution of water bodies with substances containing chemicals like nitrogen, phosphorus etc. The chemicals, which are in excess, serve as nutrients to algae, which uses them to grow excessively forming a bloom called ALGA BLOOM. Hence, nutrients in excessive amounts entering water systems, causing algal bloom describes EUTROPHICATION.
3. Biomagnification refers to the build up or accumulation of toxic chemical substances in the body systems of living organisms higher up in the food chain. Pollutants like pesticides, herbicides flow into water bodies and are absorbed by certain aquatic organisms. When these organisms are fed on by consumers, the harmful substances accumulates in their tissues until it reaches a maximum concentration. Hence, a high concentration of toxic chemicals present in the bodies of animals at the highest trophic levels describes BIOMAGNIFICATION.
Answer:
The correct answer is - option C.
Explanation:
The Type A and type B personality hypothesis that explains that there is two type of personalities Type, Type A and Type B. Brain is according to his friends is Type A personality person.
Type A person is characterized by competitiveness, impatience, aggressive verbally and physically, negative attitude, unrealistic sense of believe. In the given conditions except the upbeat, glass- half approach to life, which is a positive way to look the life, all other put him on risk of cardiovascular diseases.
Thus, the correct answer s - option C.