Which parts of the body help to make up the first line of defense for your immune system ?

a. white and red blood cells

b. Skin,breathing passages, mouth and stomach

c.T & B cells

d. Memory cells and antibodies

Answers

Answer 1

Answer:

b

Explanation:

its the first thing that bacteria or any pathogens come into contact


Related Questions

Dr. Flores wants to know which of the forum claims is best supported by the evidence you have gathered from your previous Sim observations and the text. Select the claim you think is best supported from the options below. Claim 1: Molecules in a substance disappear or no longer exist when a substance changes phase. O Claim 2: Molecules in a substance move differently when a substance changes phase. Claim 3: Molecules in a substance change into a new kind of molecule during a phase change.​

Answers

Answer:

Claim 2: Molecules in a substance move differently when a substance changes phase.

Explanation:

Molecules in a liquid phase move freely and bump into each other. In a gas phase, the molecules move with a lot more energy and bump more times against each other; there is a lot of space for the molecules to move. In a solid phase, the molecules hardly move, there is not much space between them, and they are together, often in a regular pattern.

In conclusion, when matter changes from one phase to another, the molecules move differently.

Answer:

you will need to either add or take away energy and pay attention to how the molecules move. Molecules of a solid move in place, molecules of a liquid move around each other, and molecules of a gas move away from each other.

Explanation:


When water experiences gravity and moves to streams, creeks, and rivers
after precipitation this is called what?
A) Runoff
B) Transpiration
C) Sublimation
D) Infiltration

Answers

Answer: The answer is runoff.

Explanation: Runoff is water “running off” the land surface.

Please help me please

Answers

Answer:

cloud, water, rain

Explanation:


A. Describe what happens to the trilaminar disk

Answers

Answer:

Wilmer sillas ella ella ella ella ella ella ala si el el al al al al al al

A community is

all the organisms living in an area that have the potential to interact

all the individuals of a species that can potentially interact

all the animal species that can potentially interact with all the plant species in an area

all the organisms and abiotic components of an area that have the potential to interact

A place filled with people that will assist in raising your child...and bully them, peer-pressure them, etc.

Answers

Answer:

all the organisms living in an area that have the potential to interact

Explanation:

All the organisms in a living area

Which organelle serves as a channel for transport of materials between
cytoplasm and nucleus?

Answers

Answer: Endoplasmic recticulum

Explanation: Endoplasmic reticulum serves as channels for the transport of materials between various regions of the cytoplasm or between the cytoplasm and the nucleus.

Answer:

Endoplasmic reticulum

Explanation:

The endoplasmic reticulum serves as channels for the transport between the cytoplasm and the nucleus.

When free energy is released during a chemical reaction it is called what of below
an endothermic reaction
an isothermic reaction
an endergonic reaction
an exergonic reaction
a nuclear reaction

Answers

Answer:

an exergonic reaction

WILL GIVE YOU BRAINLYEST!!!

How are
biodiversity & sustainability linked?

Answers

Answer: The biodiversity of an ecosystem contributes to the sustainability of that ecosystem. The higher the biodiversity of an ecosystem, the more sustainable it is. ... The higher biodiversity in an ecosystem means that there is a greater variety of genes and species in that ecosystem.

Explanation:

hope this helps pls mark me brainliest

Why are tigers orange
A. Orange is a pretty color
B.Orange warns other predators to beware of Tigers
C.Scientist think tigers are orange because many prey species of colorblind to the color red

Answers

Answer:

C

Explanation:

Most animals can't see orange, and this makes the tiger almost invisible. This is also why hunters wear orange.

An energy-rich organic compound needed by organisms is
1.
water
2.
salt
3.
oxygen
4.
glucose

Answers

the answer is glucose ( number 4)

The chance of two genes being separated in a cross-over is ____ to _____.
A. Directly proportional; the size of the chromosome
B. Directly proportional; the distance between them
C. Inversely proportional; the distance between them
D. Inversely proportional; the chromosome number

Answers

Answer:

the chance of two genes being separated in a cross -over is homologous to chromosomes

Sustainable forestry: seeks to conserve forests for the long-term commercial harvest of timber and non-timber forest products by maintaining a mix of forest trees, by age and species, rather than imposing a monoculture. due to the complexity of goals, is most effective when it involves cooperation among environmentalists, loggers, farmers, indigenous peoples, and local, state, and federal governments. approaches vary from one forest ecosystem to another, in response to different environmental, cultural, and economic conditions. is all of the above.

Answers

Answer:

Yes, it is all of the above.

Explanation:

Yes, all the above statements are necessary for sustainable forestry because trees and other wild plants of the forest are necessary for all farmers, loggers, environmentalists, indigenous peoples and for the governments. The environmentalists study on these plants to find out the impact of these different plants on the environment, the farmers cultivate trees and plants to get money by selling it, the employment of loggers also related to these forests and the indigenous peoples also gain benefits by gaining food as well as medicines from it. This forest also fulfill the needs of wood and other products of the country.

The first three eons (from the beginning of the earth's formation) are all lumped
into one general category called

Answers

Answer:

precambrian

Explanation:

PSYCHOLOGY

The ____ states that the firing rate of neurons in the auditory nerve matches the frequency of the sound wave.
A. frequency theory
B. place theory
C. volley principle
D. auditory principle

Answers

The answer is C. Volley principle

Which conclusion does the following fact support?

Agricultural scientists are able to fortify foods with vitamins that are lacking in certain regions around the world.

1. Most of the food that we eat has been altered or added to in some way.
2. Agricultural science contributes to a healthier world population.
3. Genetic modifications and hormonal additives pose health risks.
4. Advancements in agricultural sciences are necessary to end hunger.

Answers

I think the answer would be number 2

a
Which of the following might be affected by the loss of a plant species?
Only organisms that feed directly off the lost plant species will be affected
b. Other plant species will be affected, but no other organisms will.
Multiple organisms may be affected by the loss of a plant species.
d. No other organisms would be affected.
С.
Please select the best answer from the choices provided
А
B
Оооо

Answers

Answer:

Multiple organisms may be affected by the loss of a plant species

Explanation:

If a organisms food source were to vanish, it would affect the herbivores that feed on that plant, but also the carnivores/omnivores that feed on the herbivores. Because the herbivores will die as a result from not having food. This will also lead to the carnivores/omnivores to die.

In the spleen, ___________ from red blood cells is broken down to form (unconjugated) bilirubin. Unconjugated bilirubin is insoluble in blood plasma so binds to albumens in the blood and is sent to the ______. Bilirubin ___________ with glucuronic acid to form conjugated bilirubin. It forms part of the bile, which is ______ in the gall bladder. Food in the gut stimulates gall bladder contraction and the bile passes down the ____ ____ to the _____ _________, where it aids in the digestion of ______.

Answers

Answer:

Haemoglobin; liver; binds; stored; bile duct; small intestine; lipids.

Explanation:

Serology can be defined as the study of blood and the reactions between antibodies and antigens in the blood.

In Biology, blood pH can be defined as a measure of the hydrogen ion (H¯) concentration of blood i.e the level of alkalinity or acidity of blood.

Basically, the normal blood pH of a human being should be between 7.35 and 7.45.

Hence, one of the ways in which the body regulates blood pH is with proteins. Proteins help regulate blood pH by accepting and releasing hydrogen ions. Typically, when the blood pH falls, the hydrogen ions (H¯) are accepted (absorbed) while hydrogen ions are released when the blood pH rises.

For example, a protein such as haemoglobin which makes up a composition of the red blood cells, binds an amount of acid required to regulate blood pH.

In the spleen, haemoglobin from red blood cells is broken down to form (unconjugated) bilirubin. Unconjugated bilirubin is insoluble in blood plasma so binds to albumens in the blood and is sent to the liver. Bilirubin binds with glucuronic acid to form conjugated bilirubin. It forms part of the bile, which is stored in the gall bladder. Food in the gut stimulates gall bladder contraction and the bile passes down the bile duct to the small intestine, where it aids in the digestion of lipids.

What is the measurement of the velocity of moving particles the Doppler effect is based
on?

Answers

The Doppler effect is the phenomenon whereby a monochromatic wave reflected by a moving target undergoes a frequency shift which is proportional to the target velocity, namely ω = ωo(1 − v · n/c), where v is the target velocity, c is the wave velocity and n is the unit vector in the direction of the reflected ray.
www.sciencedirect.com › topics › d...
Doppler

The possibility for either green or yellow seeds in pea plants ia an example of possible

Answers

Answer:

Alleles or heterozygous. If you need to pick one, then probably alleles?

Explanation:

Which steps are important when designing and conducting a scientific experiment

Answers

Forming an hypothesis, gathering materials, performing your experiment, and determining the conclusion. Also determining independent and dependent variables could be one depending on the teacher. Sorry if I’m wrong!

The United States is often called the "melting pot" because people from all nations have made a home here. If someone has a grandmother from Brazil, for example, that came to live in the US, would relocating to Chicago change her grandkids’ skin tone phenotype? Why or why not?

Answers

Answer:

Technically no

Explanation:

Technically no. The skin tone of the individual is caused by two factors, one is genetic and the other is environmental. The genetic factor will continue being there since the grandkids would be descendants of the grandmother. The environmental factor can change skin tone phenotype over the course of an individual's life. Although in this scenario, both locations have the same type of weather. Both Brazil and California are incredibly hot locations all year round.

Qque sensacion experimentas a la boca cuanco tienes ganas i estas delante de un alimento wue te gusta mucho¿

Answers

Answer:

La sensación que experimento en la boca cuando tengo ganas de comer y estoy delante de un alimento que me gusta mucho es la de que "se me hace agua la boca".

Así, al percibir la presencia de un alimento, el cuerpo humano instintivamente comienza a generar saliva en una proporción mayor a la normal, con el objetivo de lubricar la boca y la garganta para facilitar la ingesta de alimentos.  A esta situación se la conoce coloquialmente como "hacer agua la boca".

write any three methods of controlling flood landslide and soil erosion​

Answers

You can reduce soil erosion by:
Maintaining a healthy, perennial plant cover.
Mulching.
Planting a cover crop – such as winter rye in vegetable gardens. ...
Placing crushed stone, wood chips, and other similar materials in heavily used areas where vegetation is hard to establish and maintain.

Floods can be controlled by redirecting excess water to purpose-built canals or floodways, which in turn divert the water to temporary holding ponds or other bodies of water where there is a lower risk or impact to flooding.

modifying slope geometry, using chemical agents to reinforce slope material, installing structures such as piles and retaining walls, grouting rock joints and fissures, diverting debris pathways, and rerouting surface and underwater drainage.




Which is the most recent if selectively bred carrot flavor profiles

Answers

Answer:

Sweet and juicy.

Explanation:

This is because sweet and juicy flavor happens to be a good and tasty flavor that everyone would love and it was developed to achieve these phenotypic trait by selectively breeding two different carrots species to achieve these desired traits. It was gotten after researches has been done to satisfy human desires of consuming something sweet and juicy.

Kevin is a crime scene investigator. He believes he has found saliva on the floor of a crime scene. Since he cannot cut out a piece of the floor, which steps should he perform to collect the saliva sample? Package the swab in a paper envelope. Moisten a sterile cotton swab with distilled water. Gently rub the stain, covering the entire swab. Allow the swab to dry thoroughly. Shake off the excess water.

Answers

Answer:

-Moisten a sterile cotton swab with distilled water.

-Shake off the excess water.

-Gently rub the stain, covering the entire swab.

-Allow the swab to dry thoroughly.

-Package the swab in a paper envelope.

Explanation:

Answer:

Moisten a sterile cotton swab with distilled water.

-Shake off the excess water.

-Gently rub the stain, covering the entire swab.

-Allow the swab to dry thoroughly.

-Package the swab in a paper envelope.

Explanation:

Explanation:

1.Name two characteristics that all animals share

2.Name two characteristics that all plants share

3.Sort the animals into two groups based on each of the following differences:

a) have hair; do not have hair

b) have feathers; do not have feathers

c) have naked skin; do not have naked skin

4. State whether you think a forest normally has high biodiversity or low biodiversity. Give a reason for your answer

=(​

Answers

I think the answer will be C because the state weather

True or False -water vapor can condense in the air creating clouds and fog

HELPPPP PLEASE!!!!​

Answers

Answer:

True! Hope this helps!! (:

Explanation:

Which statement best summarizes why the cell theory was developed over time?
A. As new cells evolved they proved the cell theory was inaccurate.
B. The discovery of new evidence resulted in changes to the cell theory.
C. Changes in cell models showed the cell theory was based on opinion.
D. The cell theory was modified with the discovery of every new organelle.

Answers

B, the discovery of new evidence resulted in changes to the cell theory,

The statement 'the discovery of new evidence resulted in changes to the cell theory'  best summarizes why the cell theory was developed over time.

The cell theory is a model in cellular biology that states all cells evolved from a pre-existing cell.

This theory also states that all organisms are composed of cells.

The cell theory was further modified as new evidence emerged in the scientific community.

In conclusion, the statement 'the discovery of new evidence resulted in changes to the cell theory'  best summarizes why the cell theory was developed over time.

Learn more in:

https://brainly.com/question/1988910

PLEASE HELP ME WITH ALL THREE QUESTIONS!! GIVING 20 POINTS AWAY!!!!!!

Answers

Answer:

C , A ,B

Explanation:

hope this helps you

Select the statement(s) that accurately illustrate scenarios of weathering. Water flows into cracks in a rock, freezes and expands, pushing against the crack making it wider. Wind gusts carry large amounts of sand across the landscape creating a sandstorm. Plant roots expand cracks in rocks as the plant grows. Sand particles in the blowing wind may act like sandpaper to rub against the rocks and wear off small particles. Oxygen in the air reacts with iron ore in a rock creating streaks of rus

Answers

Answer:

The question would be properly written with options attached for the sake of comprehension:

Select the statement(s) that accurately illustrate scenarios of weathering.

A. Water flows into cracks in a rock, freezes, and expands, pushing against the crack making it wider.

B. Wind gusts carry large amounts of sand across the landscape creating a sandstorm.

C. Plant roots expand cracks in rocks as the plant grows.

D. Sand particles in the blowing wind may act like sandpaper to rub against the rocks and wear off small particles.

E. Oxygen in the air reacts with iron ore in a rock creating streaks of rust

The correct options in the question above are:

Options A, C, D, and E.

Explanation:

First, Weathering is the actions that lead to the gradual but continuous breakdown of rocks and minerals into soils. There are two main kinds of weathering: mechanical  weathering and chemical weathering.

From the question above, options A, C, and D are all examples of mechanical weathering where rocks are broken down physically into smaller pieces.

Option B would have also been correct but didn't mention that the sandstorm brushed against the rock or collided with it.

While option E is an example of chemical weathering because of the chemical reaction between the oxygen in the air and the iron ore in rock. This results in the breakdown of minerals that are rich in iron forming new compounds creating rust.

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