Answer:
Convection is the process of warm fluids rising and cooler fluids sinking. Inside the Earth, convection is powered by heat mostly from the core. The slow circulation of rock in the mantle moves the tectonic plates at the surface.
Explanation:
Answer:
Option A, The animal can only live in Australia
Explanation:
At present the Koala are found in several states of Australia such as
a) Queensland
b) NSW
c) Victoria
d) South Australia
Though the Koala is found on the eucalyptus trees of the temperate rain forest , they are only found in Australian geographies . There are several other place on planet earth where there is rainforest with eucalyptus trees and temperate climate, even though the Koalas are limited to Australia.
Hence Option A is correct.
The law of conservation of matter states that matter cannot be created or destroyed. The law of conservation of energy states that energy cannot be created or destroyed. Both of the laws state that both cannot be created or destroyed, but both take on different forms, or become different kinds of matter or energy.
Answer: existence of a particular species is completely wiped out from the planet
Explanation: Extinction means that the existence of a particular species is completely wiped out from the planet. It is an irreversible form of damage, since neither a single male and female species member is present to procreate. Endangered, on the other hand, means that a species is nearing extinction.
The isopropanol will extract the DNA from the strawberries.
Explanation:
Strawberries help in DNA extraction as it has enzymes and pulverizes easily which breaks the cell wall and has large number of DNA in it. The isopropanol helps in precipitating the DNA.
In an experiment of DNA isolation, a squashed and refrigerated strawberry was added in a isopropanol solution after filtering it. It can be seen DNAs are starting to isolate from the strawberry extract in the form of fluffy bubbles.
