Answer:
The region of retina devoid of photoreceptor cells (rod cells and cone cells)
Explanation:
The retina is the layer of the eyeball and is packed with rod cells and cone cells responsible for night and day vision respectively. The blind spot is the region in the retina where no rod cells and cone cells are present.
Absence of these photoreceptor cells ensures that no vision is formed in this part of the retina. However, the blind spot serves as the site from where the optic nerve passes through the retina and serves to transmit the impulse to the brain.
<h3><u>Answer;</u></h3>
Waste
<u>Waste</u> is any unwanted substance or toxin that is expelled from organisms. Example: urea, carbon dioxide.
<h3><u>Explanation;</u></h3>
- <em><u>The body must remove waste products from the all the tissues in the body. These waste products are constantly being produced by the body tissues and must therefore be excreted, because if they are not, they will increase in concentration and may interfere with chemical reactions or damage cells.</u></em>
- <em><u>Waste products include, carbon dioxide and Urea</u></em>. They are excreted through various body system and excretory organs, which includes, kidney that eliminates water, urea and other waste products in the form of urine, lungs which eliminates carbon dioxide from the body, and skin which excretes excess water.
Answer:
<u>B. Animals are always biotic components of an ecosystem. </u>
Explanation:
The living components of the environment are known as biotic factors. Biotic factors include plants, animals, and micro-organisms.
thriving sea
Explanation:
The fossils seen in the rich rock unit suggests that the paleo-environment of the area is a sea bursting with life.
- Fossils are the preserved remains of life found in rock units.
- Fossils can be used to interpret the nature of the past climatic condition in an area.
- Since different organisms have their habitat and the ecosystem which they thrive, their remains should define such an environment.
- Now, we have a collection of marine fossils here.
- The area must have been a marine environment based on this.
learn more:
Fossils brainly.com/question/7382392
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Answer:
Muscular activity of its digestive system distorts the outer body wall.
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