Describe the stages of cellular development prior to tissue stages. Your response should be approximately one paragraph in length and include the key words: cleavage, morula, blastula, blastocoel.

Morula (cleavage stage) >> blastoderm (blastula surrounded by the blastocoel)

Explanation:

The morula is an early-stage embryo stage (3 to 4 days after fertilization). During this stage, the embryo is composed of a globular solid mass of 16 to 32 cells (i.e., blastomeres) that are formed by cleavage of the zygote. The morula stage precedes the blastocyst stage (4 to 5 days after fertilization), a distinctive stage of a mammalian embryo with over 100 cells. In the rest of the animals, it is referred to as a blastula. A blastoderm is a post-cleavage embryo consisting of a solid layer of epithelial tissue that makes up the blastula, which surrounds a fluid-filled cavity called the blastocoel.

enzyme speed up the reactions

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 !