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harkovskaia [24]
3 years ago
15

how do current levels of plant and animal biodiversity on easter island compare with past biodiversity levels

Biology
1 answer:
-BARSIC- [3]3 years ago
7 0

Answer and Explanation:

Easter Island, a small island of around 64 square miles, has been a mystery for many scientists who study the changes on the past and current biodiversity abundance. According to research, this island used to be extremely diverse in species of fauna and flora, especially the latter. However, it is now composed of few species of invertebrates and little to almost no vegetation. This occured <u>due to the first colonizers</u> who rapidly deforested the region.

Research suggests that, apart from this deforestation, which caused the decline of wildlife species that depended on shrubs and palm trees, Polynesian colonisers introduced the Polynesian rat, which consumed almost all of the trees that were present in the island, leading to the absence of their regeneration.

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The majority of water reabsorption from the filtrate occurs in the proximal convoluted tubule (PCT).

Further Explanation:

The nephron is the functional unit of the kidney which plays key role in the removal of waste product from the body. Nephron consists of glomerulus and convoluted tubules.

Parts of the nephron:

1. <u>Proximal convoluted tubule (PCT):</u> It is the first part of nephron which is closer to the glomerulus. It consists of microvilli and various carrier protein which increases its surface area for reabsorption. This part is responsible for the reabsorption of sodium chloride, glucose, water, amino acid, bicarbonate etc.

2. <u>Henle loop</u>: This is present after PCT. As it forms loop like structure therefore it is named so. It consist of ascending loop and descending loop. This part is responsible for the reabsorption of water, sodium and chloride.

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1. Learn more about heart brainly.com/question/7301375

2. Learn more about blood brainly.com/question/8168020

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Answer Detail:

Grade: High School

Subject: Biology

Chapter: The excretory system

Keywords:

Water reabsorption, proximal convoluted tubule, nephron, kidney, glomerulus, microvilli, carrier protein, surface area, amino acid, bicarbonate, Henle loop, distal convoluted tubule, collecting duct, PCT, DCT.

3 0
2 years ago
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