Answer:
The life cycle of a goldfish starts out as an egg. The female fish will lay about 25 eggs, but unfortunately only some grow up. The eggs usually hatch within 5 days and if you have a fish tank then you should take the adult fish out or else it may eat the eggs. After the egg hatches, it turns into a fry,(this is what a baby goldfish is called) Once they hatch, they will stay attached to the plants for two days, after that, you should start to feed them. Once they are not fry anymore, they turn into adult goldfish. If you take care of them properly, they could last up to 15 years! Once the fish are complete adults, they can lay eggs. The females rub up against plants and lays eggs while the male Goldfish sprays the eggs to make them fertilize and turn into fry.
There are approximately 12 transisthmian shrimps species, called sister species because they cannot interbreed effectively, in the Isthmus of Panama. It is believed that the closure of the Panama resulted to allopatric speciation of the shrimp population within the region.
If the following graph represents the decay of strontium-90 in an igneous rock, what event occurred at 0 years on the horizontal axis?
<span>I have a graph with the vertical axis showing the percentage of radioactive element remaining. </span>
D. kangaroo.................................................................
Answer:
OC
Explanation:
Primary succession begins after a new habitat is opened that was previously unavailable- for example, lava flow that left behind bare rock. This successions normally begins with organisms like lichens, which are able to survive in these conditions. It has no soil and was previously uninhabited.
Secondary succession begins as a response to a disturbance that clears a previously inhabited area, like a forest fire or tsunami. This may cause a lot of destruction and death, but afterwards there is still soil available for new plants to grow again. Eventually, the habitat will regrow itself.
