BIOLOGY MIDDLE SCHOOL

What might be a symptom of a person whose vein valves are not functioning properly and are causing fluid it flow away from the heart?

Answers

Answer 1
Answer:

Considering answers;

-fever

-constricted veins

-swollen veins

-confusion


Answer;

Swollen veins


Swollen veins might be a symptom of a person whose vein valves are not functioning properly and are causing fluid it flow away from the heart.


Explanation;

Valves are structures that are found in the circulatory system both in the heart and the veins.

They function to prevent the back flow of blood.

They do so by ensuring the continuous flow of blood in one direction.

If the valves are not functioning properly it may lead to various effects such as swollen veins due to the back flow of blood which may lead to the pooling of blood in the extremities.

Answer 2
Answer:

The answer is C. swollen veins.

Good luck :)

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An organism that contains two of the same alleles for a trait is said to be _______ for that trait. A.homozygous
B.dominant
C.recessive
Dheterozygous

Answers

An organism that contains two of the same alleles for a trait is said to be    A. Homozygous for that trait.

homozygous - two of the same alleles
heterozygous - two different alleles

Hope this helps! :)
A homozygous
In order to remember this i do:
In .homozygous 
there is 3 o which is the same
In heterozygous
there is 2 e and 2 o which is different
Hope it helps

If the outside temperature decreases by 20 degrees Celsius, what will happen to a reptile’s body temperature?

Answers

The reptile's body temperature rises when the external temperature rises. When the temperature drops, so does his body temperature. If a reptile feels cold because the external temperatures have made his blood cold, he'll lie in the sun to warm up. However, if the external temperature is too high, he scurries under a rock, dives in a pool or finds some kind of shade where he can cool down. Reptiles and other animals with ectothermic systems are vulnerable to extreme changes in temperature because they can't control their temperatures internally. They can control their body temperatures only by moving to an environment with a suitable ambient temperature.

Is Euglena a prokaryotic organism or a eukaryotic organism

Answers


It is eukaryotic and is in the protist kingdom/
 Euglenas are protists, so they are eukaryotes.
Hope I helped! Good luck(; 

Plzzz help memy homework is all about el nino, la nino. my teacher give me 11 sentence so i have to write with one is el nino, la nino or both



1.weather in u.s. can be affected by changes that occur thousands of kilometer away.

2.winds blowing across the pacific ocean are stronger than normal causing warm water to accumulate in western pacific and cooler water in the eastern pacific.

3. periodic warming and cooling of a huge mass of sea water can impact weather across north america.

4. short-term climate change.

5. south american ocean temperature increase by 1-7 degrees C.

6. normally cold water flowing to the south american coast are replaced by warm tropical waters.

7. normally strong trade winds blowing east to west weaken and reverse.

8. may tigger cooler & drier weather to many parts of the U.S..

9.may cause droughts in southern U.S..

10.Can trigger heavier than normal rainfall across much of the U.S..

11. Can cause severe storms in california

Answers

sentence 1. is both because they both near South America, and South America is thousands of kilometers away from the United States

sentence 2. is el nino because el nino forms in the West Pacific

sentence 3. is el nino because el nino starts out warm and the cools down and affects the western coast of North America like California and states like that 

sentence 4. is el nino because el nino leaves the climate different for a short period of time, like a year
 
sentence 5. is la nina because la nina causes temperatures to go down and get colder 

sentence 6. is la nina beacuse la nina starts out cold and then when it hits South America, it gets warmer since they have warm water

sentence 7. is el nino because el nino blows east to west, and then when it reverses, it becomes la nina

sentence 8. la nina because la nina is cold and causes cooler temperatures

sentence 9. is el nino because el nino is warm and hot and affects he environment by taking away its moisture and making it dry and hot

 sentence 10. is el nino because after an el nino, there is lots of rainfall. especially in California

sentence 11. is el nino because after a el nino, there is lots of rain, which causes severe floods, mudslides, and etc.

hopefully i help u because i barely know anything about la nina and el nino
El Nino is easier, because right now we are in El Nino season,
1. Yes, it can, water temperatures are extending from CA to FL, as of that some hurricanes can or can't be able to form, but the heat has been an impact this year.
2.They are stronger because there has been lots of wind shear in the atmostphere causing severe thunderstorms, due to that waters in CA have been warmer than usual causing hurricanes somewhat close to California but no landfall.
3. Periodic warming is essential to El Nino, temperatures have been +20-30 this winter in some areas and causing severe thunderstorms in Florida more and other places.
4.Climate change has been impacted in many areas, Florida, DC, MD, NY, etc. CA has had 100 degree temperatures last year.
5.They have been increased because of climate change, as of now Antarctica has had warmer waters and causing that made the waters increase and get warmer as time goes on.
6.The cold water has been changing to warm water because of the El Nino causing lots of issues on the South America/North America border. As you know Hurricane Patricia impacted Mexico that was warm water and little shear because of El Nino.
7.Strong winds have been an impact to El Nino, thankfully no extreme hurricanes were an impact to US. And wind shear has been extreme to hurricanes and not been able to form or strengthen.
8. Yes California has had that because of El Nino, thankfully now El Nino is getting better because of the time going by, Almost all of California was on extreme drought.
9. It will not cause many droughts to the Southern US but TX could be in favor to drought if there was no rain or moisture to TX.
10. Yes it can trigger heavy rainfall, Florida has already had 10 inches and now it's March, as well as many other places that had lots of rainfall recently.
11. Yes it can, there has been severe winds and tornadoes now, jet streams are always an impact to possible severe weather.

Hope this helps you.

How can invasive species alter an ecosystems food web?

Answers

Invasive species can either replace an organism from the ecosystem food web or replace it.  

Explanation:

  • Invasive species are non-native species which can be animals, plants, micro-organisms, fish, etc. they are very much threatening to the native species and ecosystem food web.
  • Invasive species are spread by humans mostly, it happens unintentionally when people travel and all. Even climate change could be a reason for its spread.
  • So, it becomes threatening to native species because when you introduce it into a new ecosystem, it does not have a predator or control. It grows aggressively and takes over the resources for the native species.

What height setting of the first hill will cause the 35 g car to reach the egg in 1.88 s?

Answers

35g car to reach on egg in 1.88 sec.
 

Its easy 40 because to add and divide.
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Need help ASAP!!!!! Will friend request and write something nice on wall.
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