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disa [49]
3 years ago
11

In animals how do oxygen and food travel to all the cells of the body

Biology
1 answer:
Sedbober [7]3 years ago
5 0
Oxygen is needed for cellular respiration to release the energy from food molecules. ... Animals have lungs or gills that allow oxygen to enter the animal's cells while plants have small pores called stoma that allow gases to enter and leave their leaves.
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The graph below compares the rates of reaction of a burning candle and an exploding firework.
marusya05 [52]

Answer:

The reaction that causes a firework to explode requires less energy to start, and occurs more rapidly than the reaction that causes a candle to burn.

Explanation:

The speed of a chemical reaction and the amount of energy required for this reaction is directly linked to the concentration of reagents present in the system. With that, we can say that the higher the concentration of reagents, the faster the chemical reaction will be due to the greater probability of collision between its molecules.

Although the reaction that causes a candle to burn has more reactants than the reaction that causes the fireworks to explode, the latter requires less energy to start. This makes the molecules of the reagents stir faster and collide more efficiently, making the reaction happen much faster.

In summary, the reaction that causes a firework to explode requires less energy to start and occurs more quickly than the reaction that causes a candle to burn.

6 0
2 years ago
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A meadow ecosystem includes many species of grasses and small shrubs, several herbivores, and a few carnivores. A fungus coloniz
Stels [109]

A field habitat vegetated by grass and other non-woody plants (grasslands) is known as a meadow. They are of ecological benefit as they are open, sunny regions, which fascinate and support fauna and flora that could not survive in other conditions.  

In the given case, when a fungus colonizes the meadow and destructs the majority of its vegetation, which comprises species of small shrubs and grasses, then this may result in the decline of herbivore species due to lack of vegetation on which they survive, which will eventually result in the reduction of carnivore species, as they feed on herbivores.  


6 0
3 years ago
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According to many scientists, which of these probably caused a major change in the composition of Earth's atmosphere? F the weat
notka56 [123]

Answer:

J the appearance of photosynthetic organisms​

7 0
2 years ago
Witch is greater -4 or -6
netineya [11]

Answer:

-4 is greater than -6 because it's closer to being a positive number than -6 is

3 0
3 years ago
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What did humans in England do to change the tree trunks in mid 1800's?
Katarina [22]

Answer:

Scientists have discovered the specific mutation that famously turned moths black during the Industrial Revolution. In an iconic evolutionary case study, a black form of the peppered moth rapidly took over in industrial parts of the UK during the 1800s, as soot blackened the tree trunks and walls of its habitat

Explanation:

5 0
2 years ago
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