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hodyreva [135]
3 years ago
13

What are the 2 main circulations of the body?

Biology
1 answer:
Vaselesa [24]3 years ago
8 0
Pulmonary and systemic circulation. 
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Facilitated diffusion of substances crossing the cell (plasma) membrane takes place with the help of proteins such as channel proteins and carrier proteins.
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Wind can erode rocks especially in desert areas select all spheres that are interacting in this situation
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Erosion is brought about by the forces of nature or human activity: water, wind, earthquakes, mining, quarrying, etc. In the desert, there is very little water that can cause weathering or erosion, so the most probable answer is wind or maybe even animal activity.
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The top of a food web
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Answer:

The top of the food web contains all the alpha predators

Explanation:

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Which term best describes the relationship between the spider and the grasshopper?
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Predation is the best word to describe the relationship between the spider and the grasshopper.
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Calculate the number of cells in a hummingbird, assuming it has a mass of 10-2 kg.
Nikitich [7]

The number of cells in a hummingbird, given the data is 10¹² cells

<h3>How to determine the mass of one cell</h3>

We'll begin by obtained the mass of a cell. This can be obtained as illustrated below:

Mass of 1 cell = 10 × mass of bacterium

But

Mass of bacterium = 10⁻¹⁵ Kg

Thus,

Mass of 1 cell = 10 × 10⁻¹⁵ Kg

Mass of 1 cell = 10⁻¹⁴ Kg

<h3>How to determine the number of cells in the hummingbird</h3>

The number of cells in the hummingbird can be obtain as follow:

  • Mass of 1 cell = 10⁻¹⁴ Kg
  • Mass of hummingbird = 10⁻² Kg
  • Number of cells =?

Number of cells = Mass of hummingbird / mass of 1 cell

Number of cells = 10⁻² / 10⁻¹⁴

Number of cells = 10¹² cells

Thus, the number of cells in the hummingbird is 10¹² cells

Learn more about number of cells:

brainly.com/question/21336646

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Complete question

Calculate the number of cells in a hummingbird assuming the mass of an average cell is ten times the mass of a bacterium. The mass of a hummingbird is of the order of 10⁻² Kg and that of a bacterium is 10⁻¹⁵ Kg

4 0
2 years ago
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