Population bottlenecks. but their genes still carry the marks of this bottleneck: they have much less genetic variation than a population of southern elephant seals that was not so intensely hunted.
Answer:
Predator-prey relation.
Explanation:
A predator is defined as an organism that hunts another individual, whereas a prey refers to the organism that is eaten by the predator. They tend to co-evolve (evolve together). <u>The prey is essential for the predator to survive, while the predator controls the prey populations by hunting some of the individuals.</u>
Predator-prey relations are interactions that occur between two species where one species (prey) represents a food source for the other species (predator).
The turtle (prey) is essential for the survival of the jaguar (<em>Panthera onca)</em>, while the jaguar controls the populations of turtles by preying upon them. Therefore, this is a predator-prey relation.
Answer:
Light energy to chemical energy
Explanation:
The plant uses the energy from the sun to create chemical energy (food) for it to use.
Answer:
animals are the only organisms that compete for resources
Explanation:
this is due to the fact that plants take up resources passively, a method which doesn't require them to waste any energy, however in the case of resources, is not very effective. suppose there was a bit of water scarcity in your area, and a plant and you both need water for survival. obviously, the plant cant possibly do anything to receive these resources, as it is just a plant. its survival is based merely on the chance that you pour water into it. this is not the case for animals, which, like us, actively collect and gather resources, and use them to our advantage. therefore, animals are the only animals that compete for resources
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>
