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Harrizon [31]
3 years ago
13

Three main categories of freshwater ecosystems are

Biology
1 answer:
sladkih [1.3K]3 years ago
6 0
<span>Lentic is slow moving water,including pools,ponds and lakes.

Lotic is fast moving water,for example streams and rivers.

<span>Wetlands are areas where the soil is saturated or inundated for at least part of the time.

Hope this helps :D</span></span>
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Listed in the Item Bank are key terms and expressions, each of which is associated with one of the columns. Some terms may displ
melomori [17]

Answer:

Advantages:

Low Level Irradiation kills bacteria and parasites.

The Nutrition value of of irradiated food is the same as regular food with less bacteria.

Irradiation makes fruits and vegetables riper and spoil slower.

Disadvantages:  

Irradiation will increase cost of food.

The percentage of radiation as always being negative will also make

Irradiated food are not widely available yet.

6 0
2 years ago
A typical human cell is approximately 10.00 10.00 μm in diameter and enclosed by a membrane that is 8.000 8.000 nm thick. What i
fredd [130]

Answer:

V_{cell = 526.12 μm³

Explanation:

Given that;

A typical human cell is approximately 10.00 μm in diameter    &

enclosed by a membrane that is 8.000 nm thick.

What is the volume of the cell including the membrane?

First, let's determine the radius of the human cell=

= \frac{1}{2}*d

= \frac{1}{2}*10

= 5 μm

Now, the radius of the cell including the membrane

= 5 μm + 8.000 nm

= 5 μm + 0.008 μm

= 5.008  μm

The volume of the cell including the membrane is given by the formula:

V_{cell]= \frac{4}{3} *\pi *(r_{cell})^3 um^3

V_{cell  = \frac{4}{3}*3.142*(5.008)^3um^3

V_{cell = 526.1160731 μm³

V_{cell = 526.12 μm³

3 0
3 years ago
Science/Grade 7 - Bell - 6 / Bel
labwork [276]

The observation of the relationships between the anemone and clownfish supports the statement 'symbiotic relationships are important to an ecosystem' it is a fundamental ecological interaction.

<h3>What is symbiosis?</h3>

Symbiosis is a type of ecological interaction where both organisms are benefited from such interaction.

Symbiosis is a fundamental biological interaction that supports the delicate equilibrium (homeostasis) of both marine and terrestrial environments.

The relationships between the anemone and clownfish represent a piece of clear evidence that symbiosis not only helps these species but also the entire ecosystem.

Learn more about symbiosis here:

brainly.com/question/494031

5 0
2 years ago
A student investigates the effect of temperature on gas production in yeast. The student uses this apparatus to count the number
tigry1 [53]

The effect of temperature on gas production in yeast;

As the temperature gets higher, the yeast will produce more carbon dioxide, until at some point carbon dioxide production will decrease, that is when the yeast cells have become denatured due to the increase in tempmoreerature.

<h3>An experiment to show the effect of temperature on gas production in yeast.</h3><h3 />

If temperatures affect the growth of yeast and the amount of carbon dioxide gas produced then when the yeast is placed for instance in 75 degrees, the carbon dioxide levels will be than the carbon dioxide levels at room temperature (69 degrees), and 40 degrees, because heat activates the enzyme molecules to move faster

Yeast at an optimal temperature to produce the same amount of CO2 as yeast below or above it. ... Enzymes involved in yeast cell metabolism start to denature above-optimal temperatures, resulting in a decrease in both metabolic rate and CO2 production.

Read more about the effect of temperature on gas production in yeast: yeast:brainly.com/question/8004481

5 0
3 years ago
after the middle ages the astronomer who changed the model of the solar system by placing the sun at its center was
DaniilM [7]
It could be said that the astronomer who placed the sun in the center of the solar system was Copernicus. 
He developed the model of the universe that placed the Sun in the center rather than the Earth. It was considered the Copernican Revolution because of its contribution to science and the change of paradigm. 
3 0
3 years ago
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