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REY [17]
3 years ago
12

A number of recent, high-profile foodborne illness outbreaks have increased americans' awareness of the safety of our food suppl

y. what is the primary cause of foodborne illness in north america?
Biology
1 answer:
irga5000 [103]3 years ago
3 0
The primary cause of foodborne illness in north america is due to ingested bacteria.
The major pathogenic bacterial species are: Salmonella, E.coli, Campylobacter, and Staphylococci
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Importance of wetlands​
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Imagine this field of flowers. Environmental conditions change. The climate becomes colder and the winds become fierce. Such a c
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Its A directional because <span>In directional selection, selection pressures favor an extreme, in this case, short </span>plants<span>.tall</span>
7 0
3 years ago
Read 2 more answers
What biomes receive less then 100 Cm of rain each year? Check all that apply
jeyben [28]

<u>Answer</u>:- <em>Option 3 </em>(desert), <em>Option 4</em> (tundra) and <em>Option 5</em> (grassland).

<u>Explanation</u>:-

The amount of rainfall varies in different biomes:-

1. Tropical rain forests - The annual rainfall in these forests falls in the range of <em>125 to 660 cm</em> which varies according to the seasons.

2. Temperate rain forest - The annual rainfall in these forests can range from <em>200 cm to 350 cm</em> depending on the region where they are found. The annual rainfall is higher in warmer regions .

3. Desert - As the name suggests, the desert areas do not get enough rainfall. The annual rainfall in a desert is less than <em>25 cm</em>.

4. Tundra - It is a biome which is found in relatively cooler climates and the amount of rainfall is very less these regions. The annual rainfall in tundra biomes is less than <em>20 cm</em>.

5. Grassland - in these biomes, the rainfall is higher than the tundra and desert but is not as high as the rain forests and thus, grass is the dominant vegetation. The annual rainfall ranges from <em>60-90 cm</em>.

7 0
3 years ago
Why are detritivores, decomposers and omnivores not assigned trophic levels
Sholpan [36]

Answer:

The reason is because detritivores and decomposers and omnivores are multilevel food chain consumers in an ecosystem making them not qualified to be assigned to a given trophic level

Explanation:

An organism is placed in a trophic level based the level it is from where the food chain starts with the start of the food chain having a level of 1 for the food producers such including plants and algae

Level 2 organisms are called primary consumers and consists of organism that eat only plants known as herbivores such as cattle

Level 3 organisms are called secondary consumers and consists of animal eating organism known as carnivores such as foxes  etc.  

Level 4 organisms are called tertiary consumers  

Level 5 organisms are the a p e x p r e d a t o r s

Detritivores and decomposers such as bacteria, earthworm flies fungi consume the wastes produced at all trophic levels, therefore they cannot be assigned to a particular trophic level

Similarly, omnivores consumes both plants at level 2 and animals at level 3 making it ambiguous to assign them to one particular trophic level.

6 0
3 years ago
. Do you think evolution is still taking place in the Galapagos finches? Why or why not?
andriy [413]
I do not know much about galapagos finches (have not read darwin maybe I should) . But you can be sure evolution is taking place on any species anytime. It is not about which species it is or what time it is. Evolution keeps going. Species keep changing, evolving, maybe very slowly, but it happens all the time.
3 0
4 years ago
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