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mina [271]
3 years ago
13

List eight factors that contribute to desertification.

Biology
1 answer:
Lelechka [254]3 years ago
6 0

Answer:

include urbanization, climate change, overuse of groundwater, deforestation, natural disasters, and tillage practices in agriculture that place soils more vulnerable to wind.

Explanation:

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Which of the following adaptations in Hawaiian honeycreeper birds may best prevent their extinction?
antiseptic1488 [7]

Answer:

D

Explanation:

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Because water is a polar molecule, it makes an excellent solvent for atoms and compounds found within cells and tissues. Water,
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The correct answer is:  [C]:  "constructing cell membranes" . 
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Match the key terms and concepts of the immune system with their descriptions. ResetHelp Dendritic cellsDendritic cells Innate i
liubo4ka [24]

The question is incomplete as it does not have the options to which the provided options must be matched and the options are:

a. Includes cilia, mucous membranes, dendritic cells

b. Immunological response brought about by antibody production

c. Immunological response that kills infected host cells

d. Use(s) BCRs to recognize epitope. First step in clonal selection

e. Phagocytes that engulf anything foreign. Eventually display epitope to helper T cells using MHC I or II

f. Lymphocytes that activate B cells and CTLs

g. Differentiated B cells that are stored in lymph nodes to provide protection against future infections by the same pathogen

h. Produce and secrete antibodies

i. Kills infected host cells

Answer:

a. Innate Immunity

b. Humoral Immunity

c. Cellular Immunity

d. Immature B cells

e. Dendritic cells

f. Th cells

g. Memory cells

h. Plasma cells

i. Cytotoxic T cells

Explanation:

a. Innate Immunity

- the immunity which is present from birth and provides immunity due to the presence of physical barriers like the production of mucus and the cilia.

b. Humoral Immunity

- the immunity which is provided by the immune cells present in the blood in which the main immune cells are the lymphocytes that produce antibodies

c. Cellular Immunity

- the immune response which provides immunity by killing the infected cell observed in the case of the virus-infected cell which is killed.

d. Immature B cells

- The immature B cell is the cell that matures into the plasma cell and the effector cell and is involved in the clonal selection

e. Dendritic cells

- the antigen-presenting cell which moves in the blood and tissues and when interact with an antigen kills the antigen and displays its part through MHC I and II.  

f. Th cells-

T helper cells are the T- lymphocytes that interact with the antigen and activates the B-lymphocyte activation and T cell activation pathway.

g. Memory cells

- the cells which are produced by when a pathogen interacts with the B lymphocytes and the B cells from the memory B cell for future recognition of the antigen

h. Plasma cells

- The cells on antigen interaction start producing the antibodies.

i. Cytotoxic T cells-

the T lymphocytes which are involved in cellular immunity.

6 0
4 years ago
The average number of female offspring produced by each female in a population is the:
bulgar [2K]
<span>The number of offspring each female must produce over her entire life to "replace" herself and her mate, resulting in zero population growth. The actual number is slightly more than 2 because some offspring die before reproducing is survivorship curve.</span>
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How does change in pulmonary blood pressure and capillary filtration cause Mr. Helms’ rales (wet breath sounds)?
Igoryamba

Answer:

A change in the pulmonary blood pressure leading to an increase in the vessels around the lungs results in fluids moving into the lungs thus causing it to fill up leads to rales.

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3 years ago
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