The layer of the wall of the eye that contains blood vessels that supply nutrients to the sheet of photoreceptors at the back of the eye and becomes the iris at the front of the eye is the
a. sclera. b. retina. c. vitreous humor. d. aqueous humor. e. choroid.

The correct answer is E.

Explanation:

The choroid is a vascular layer of the eye that lays between the retina and the sclera. Its main function is to supply oxygen and nutrients to the outer layers of the retina. The layers of the choroid are:

•Haller's layer

•Sattler's layer

•Choriocapillaris

•Bruch's membrane  (in contact with the retinal pigment ephitelium)

The choroid is part of the uveal tract, which also contains the iris and the ciliary body.

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.

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light dependent reactions:

light independent reactions:

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