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Verizon [17]
3 years ago
13

How does the body make it difficult for a pathogen to reach a part of the body that can cause disease

Biology
2 answers:
ivann1987 [24]3 years ago
8 0
With multiple lines of defense including hair, defense mechanisms like sneezing, and various antigens
Arada [10]3 years ago
7 0
I took this a while ago, however I believe that it is due to the semi-permeable layer that each cell has that only allows certain substances to pass through to the inner parts of the cell
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ASAP 50 POINTS
alex41 [277]

Answer:

The Independent variable would be the pills that are being taken.

Explanation:

The Independent variable is the variable that you control because the Dependent variables depend on what the Independent variable is.

5 0
3 years ago
Which model of the atom is easiest to visualize
alexandr1967 [171]

Answer:

The Quantum Model of the Atom 1927

Explanation:

It is the most accurate model of the atom but I don't know about the easiest to visualise. Soz :(

8 0
3 years ago
The formation of dermal bones begins when aggregated mesenchymal cells differentiate and begin producing osteoid. These aggregat
Sergeeva-Olga [200]
Might be ossification centers
7 0
2 years ago
A completely heterozygous A+ blood typed man has children with a woman who is completely heterozygous B+ blood type. How many di
Lynna [10]

Answer: Heterozygous A+ and B+ can form phenotypes such as AB+, A+, B+, O.

Explanation:

Using the punnet square, Heterozygous A+ combination with B+ can form phenotypes AB+, A+, B+, O. Below is an attachment that explains it better.

Reference: Google.

5 0
3 years ago
What forms at the boundary between two different air masses of different properties?
Agata [3.3K]
The weather of the United States east of the Rocky Mountains is dominated by large masses of air that travel south from the wide expanses of land in Canada, and north from the warm waters of the Gulf of Mexico. Not surprisingly, the term air mass means a large body of air (sometimes as large as one million square miles!) that can be characterized by their temperature and humidity. Such large bodies of air form over large portions of the surface of the Earth, and we use the term source region to describe the areas of the Earth over which large air masses form. The diagram below shows the major source regions and air masses for the United States: 
6 0
4 years ago
Read 2 more answers
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