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3 years ago

Explain why ecologists think the focus of conservation efforts should be ecosystems, not individual species?

1 answer:

4 0

It depends on the species and its primary threats, there is no universal solution. Many South East Asian species are primarily threatened by poaching ("Empty forest syndrome"), whereas many "reptiles" and amphibians from Madagascar can apparently cope with fairly high levels of collection (e.g. Golden Mantella [Mantella aurantiaca]), while the loss of their often small habitat is the primary threat.

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DDT is a pesticide that has been used worldwide over the past 50 years. DDT is used to prevent insects from destroying crops and

olga2289 [7]

Answer:

I think B or C but mainly C

Explanation:

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3 years ago

What is the first step of the lithification process?

xxTIMURxx [149]

Answer:

I think its compaction

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4 years ago

Read 2 more answers

URGENT PLEASE ANSWER

Sidana [21]

1. Jesi's body is experiencing a reaction to an external stimulus.

2. The parasympathetic nervous system brings the system back to normal after the sympathetic nervous systems signals to release adrenaline.

3. As blood pressure greatly decreases, blood flow decreases, and blood pressure drops more.

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3 years ago

Match the function with the cell part. Part A1. You will use each term only once. 2. Contains DNA and directs synthesis of RNA 3

EleoNora [17]

Answer:

1. Contains DNA and directs synthesis of RNA B. Nucleus 

2. Photosynthesis - make energy H. Chloroplast

3. Protein synthesis and folding D. Rough ER 

4. ATP production, cellular respiration A. Mitochondria 

5. Transport molecules around cell C. Vesicle 

6. Functions in storage and digestion F. Vacuole

7. Lipid and carbohydrate synthesis  E. Smooth ER 

8. Modifies, sorts, tags, packages, distributes proteins G. Golgi Apparatus

Explanation:

The cell is the functional unit of all living organism, it´s enclosed by a MEMBRANE in animals, or by a CELL WALL in plants and it´s formed by several organelles that are dispersed in the intracellular fluid or CYTOPLASM, positioned along the CYTOSKELETON, which gives structural integrity to the cell. Vacuoles, Chloroplast and Cell wall are found in plant cells. Each organelle has a distinct function within the cell:

Nucleus - Contains DNA and directs the synthesis of RNA.

Chloroplast - Photosynthesis - make energy.

Rough ER - Protein synthesis and folding.

Mitochondria - ATP production, cellular respiration.

Vesicle - Transport molecules around cell.

Vacuole - Functions in storage and digestion.

Smooth ER - Lipid and carbohydrate synthesis.

Golgi Apparatus - Modifies, sorts, tags, packages, distributes proteins.

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3 years ago

What role does pyruvic acid play in cellular respiration?

Sonbull [250]

Pyruvic acid or pyruvate is a product of broken-down glucose during glycolysis. It is an ingredient in cellular respiration processes including the Kreb's cycle where it is transformed into lactate. It is also used to supply and distribute oxygen to cells through the citric acid cycle.

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4 years ago