Describe the relationship between the cytoplasm and the nucleus of a cell

The nucleus is an organelle found in the cytoplasm of the cell - but it is not part of the cytoplasm! There are small pores in the nuclear membrane called nuclear pores where molecules can leave and enter the nucleus - so for example, mRNA would leave the nucleus and go into the cytoplasm where the mRNA would be translated into protein which in some cases go back into the nucleus to function (like DNA binding proteins - transcription factors, etc.). The nucleus and cytoplasm basically work together to keep a cell alive. So, in reality it is a symbiotic relationship - one can't survive without the other!

d concave shape of wave rock

explanation:

the concave shape of wave rock is a very good evidence that supports the evolution of earth due to chemical weathering. if we talk about structure of   wave rock, studies have estimated that it is around 2.7 billion years old. it also serves as the foundation of evidence that it was the place where australian continent began to form.

how the structure of wave rock was created?

studies suggest that structure of wave rock was created when the surrounded area was started to weather due to which deposition of material started on the part of land which now contains wave rock.

the structure of wave rock is considered to be one of the best-known landforms in australia. at the height of around 15 cm, there can be found flared slopes which formulate the margins of hyden rock. it is now assumed by geologists that wave rock was created by subsurface water-induced weathering and not by glaciers, waves or wind.

due to deposition of material over the period of long time, the wave rock became tougher and tougher due to weathering from surrounding terrain. this makes it a physical evidence that supports   the evolution of earth due to chemical weathering.

hope it !