Organisms, like bacteria or lichen, that can live on bare rock and form soil are called Pioneer species. In primary succession pioneer species like lichen, algae, bacteria , fungi as well as other abiotic factors like water and wind, start to normalize the habitat. This type of successions begins on rock formations, such as mountains or volcanoes, or in a place with no organisms or soil.
Answers:
Yes , restrictions should be given on who can buy explosives. In short only authorised officers should always investigator users of explosives, they should investigate safety and security matter that has to do with explosives. They should make a strict regulations and penalty for defaulters. I think advice should be given users and buyers that has access to, explosives to protect public safety, property and the environment.
Answer:
,Mass of the Body = 10 kg.
Height = 10 m.
Acceleration due to gravity = 9.8 m/s².
Using the Formula,Potential Energy = mgh
= 10 × 9.8 × 10 = 980 J.
(b). Now, By the law of the conservation of the Energy, Total amount of the energy of the system remains constant.
∴ Kinetic Energy before the body reaches the ground is equal to the Potential Energy at the height of 10 m.
∴ Kinetic Energy = 980 J.
(c). Kinetic Energy = 980 J.
Mass of the ball = 10 kg.
∵ K.E. = 1/2 × mv²
∴ 980 = 1/2 × 10 × v²
∴ v² = 980/5
⇒ v² = 196
∴ v = 14 m/s.
Answer:
Explanation:
Oil sand is an unconventional source of oil. It requires specialized technology and great expertise to win oil from associated waste materials.
The reason why some companies bother about such oil source is explained below;
- Prevailing cost of oil in the world market makes it profitable to extract these oil from sands. A high cost of oil crude oil is a good cause to produce oil form oil sands.
- Development of new technology can catalyze interest in profitable exploration from unconventional sources.
- Economic policies can also favor the production of this source of oil.
- Demand for oil in the market can jack up production levels that can also be met by oil from oil sand.
The answer is similarity
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