That is true.
These are the three types:
Igneous- form when magma cools down and hardens.
Metamorphic- form under earth's surface after particles undergo intense heat and pressure.
Sedimentary- forms when different layers of sediment accumulate on top of each other and harden creating a solid piece.
Hope it helped!
Answer:
A
Explanation:
It is believed that the moon was formed shortly (relative time) after the earth was newly formed. This occurred in a massive planet-sized collision that ejected a huge chunk of the earth out into space. The chunk, still within earth gravitational reach, began orbiting the earth becoming the moon. Both earth and moon are slightly more than 4 billion years old.
Answer:
-Reporter gene.
Explanation:
A reporter gene can be defined as a gene, which is used as an indicator to check uptake or expression of gene by a cell or organism. It is attached to a regulatory sequence of a different gene of interest in cell culture, bacteria, plants, or animals by the researchers and used to confer its expression in that organism or cell.
Gene for GFP (green fluorescent protein) is an example of reporter gene, due to which cells that express gene of interest emit green color under blue light.
As in given experiment, target gene (gene for rhodopsin) is attached with gene for GFP, it represents an example of reporter gene.
Thus, the correct answer is 'reporter gene.'
Alright! <span>In
most cases it will induce nutrition or sth. like that to the ecosystem
because it's simply going to be eaten or die or whatever. Just a large
amount of animals will be able to survive. They need to be lucky enough
to stand the environment (temperature & stuff) and they need to be
able to find food and water sources.
In this rare case (I heard it's less than 10%) it might have the luck to
have no natural foes so it can spread. The fact that they might not
have any natural foes might cause a strong reduction of their food
source. So if you have a big ape that keeps on eating dodos and its
population keeps on growing and there's nothing that stops it... then
one day there will be no dodos left. You see, an alien species usually
will not be specialized on one prey, (or food source) because if they
were so specialized, they'd be specialized on a food source that you can
find at their homes and not at their new environment. (so they would
have died out in advance already). So they're likely to survive a little
longer.
You have the cats and camels in Australia for example... there are huge
masses of them and there are no real natural enemies to "stop" them.
You see, in the usual case there will always be a balance.
Imagine a fox only eats rabits... once there are no rabbits left, the
population of foxes will shrink because there's almost no food.
Population of rabbits will grow again which makes it possible for foxes
to find food easily which will increase their population and as a
consequence decrease the population of rabbits ;)
So in the end it is still possible that a balance will be established...
but in the worst case it might just create an irreversable unbalance.
And... it has usually never been a good idea to invent another species
as a natural foe of the other one.</span>
