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Paha777 [63]
3 years ago
10

1. the immune system tries to stop foreign agents by either killing cells directly or by

Biology
1 answer:
12345 [234]3 years ago
7 0
1. the immune system tries to stop foreign agents by either killing cells directly or by b)creating an unstable environment 
2. a chronic auto immune disease where the body produces antibodies that stick to the body's own cells causing the body to attack itself is called d) systemic lupus erythematosus 
3. cells that police the body in blood and lymph to kill cancer cells and virus infected body cells are called a) natural killer cells
4. as an infant the ability to produce antibodies is a)limited
6. when abnormal antibodies in the blood start to target tissues with in the body casing paint swelling in joints general fatigue fever chills and headache it is called c) rheumatoid arthritis 
8. the fluid that is forced out of the capillary beds by hydrostatic and osmotic pressure into the tissue space is called C) plasma 
9. any substance capable of exciting the immune system and provoking an immune response is called a) an antigen
10. tonsils are to the throat as b) peyer's patches  are to the intestine 

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It has been hypothesized that humans arrived in North America by crossing a land bridge in the far north between what is now Asi
andrew11 [14]

Answer:

Is a vicariance event

Explanation:

Even both terms are very similar, there is a difference. A dispersal event occurs when an initial specie travels from one place to another and due to the  environmental factors and the adaptation that need to develop to survive will change into different species. In the other hand, the vicariance, is a process in which there is a specie and it lives in a wide are, but it fragments into groups mainly by the continental drift, so with the passing of time it turns into different characteristics, as the human race.

4 0
3 years ago
Select the reasons that farmers typically only specialize in one breed.
Bogdan [553]
Answer options are
✅Homogeneous housing -
✅Familiarity with the breed
✅Business efficiency
✅Standardized food supply
Lack of training ❌
Time demands❌
✅Personal preference

Reasons
I’m using beef cattle to determine these answers.

I chose the ✅ answers because of the following
✅ Homogenous housing. If you live in extremely cold or hot climates, you want livestock that can withstand cold temperatures for housing reasons. Hereford and Angus are hearty and survive cold temps, Brahman are warm weather cattle.

✅Being familiar with the breed makes raising that breed easier. For example if you know Angus beef cattle and not Chalais dairy cows, you won’t know the Chalais’s unique characteristics.
✅Business efficiency - having one brand or one breed in this instance will save in time, management, food supply, medicines, etc. Different breeds will require different nutrients and feed, different housing requirements, for example.
✅ Standardized food supply. Again, different breeds require different nutrients. Having just one breed will keep food supply simple.
✅ personal preference. Although this might not be a sound business practice, people tend to stick with things they know and like.

I’m not sure what your class studied but I live on a farm and these are my answers

6 0
1 year ago
Blood in the heart chambers is separated from the myocardium by a thin membrane called the __________.
Ann [662]
It is separated by the endocardium !
7 0
3 years ago
Select the correct answer. Which component of the blood is part of the body's immune system? A. plasma B. platelets C. red blood
anastassius [24]
White blood cells, homie
4 0
3 years ago
Read 2 more answers
HELP PLEASE
MakcuM [25]
I believe the answer is c
5 0
3 years ago
Read 2 more answers
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