The cells that are on each side of a stomata and open and close it like a mouth are called _____.

Answers

Answer 1
Answer: These cells are known as guard cells. 

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A large, smooth, rounded articulating oval structure is called what?
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A homozygous tall (dominant) pea plant is crossed with a short (recessive) plant. The probability that an F1 plant will be tall isA. 100%. B. 50%. C. 75%. D. 25%.
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The spheres that only earth has are a _____.A.) hydrosphere and lithosphere
B.)hydrosphere and atmosphere
C.)hydrosphere and biosphere
D.)hydrosphere and cryosphere

Answers

Answer:

The correct answer is option C, hydrosphere and biosphere

Explanation:

It is the planet earth that consists of hydrosphere (water ) and biosphere (living things) that are distinctive of other planets. Most of the planets have  atmosphere but they are not of the same quality as that of planet earth that could support life. Also some planets have frozen water (cryosphere) beneath their surface crust such as moon , venus etc. and lithosphere is present in all the planets with distinctive features and characteristics from each other.

Actually it’s C.ALL planets have a atmosphere but it’s toxic. We have a BIOSPHERE that’s what makes things LIVING.

Sound waves have two parts. The part of the wave where the particles of the medium are pushed together is called the _____.A) rarefaction
B) compression
C) pitch
D) amplitude

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It is B) compression hope this help 

Sound waves have two parts. The part of the wave where the particles of the medium are pushed together is called the _____.

compression

How has the concept of a "planet" changed since the 16th century? Do you think this shows scientific accuracy or disproves future facts, as one assumes that they will be discredited in time too?

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Science keeps "improving", so the scientific theories and ideas from the past are either expanded on or proved to be false. The concept of planets has definitely seen changes, with Pluto peven being considered not a planet. In the 20 century we believed there were 9 planets but now there is considered to be 8. Science exists as it is but as humans we are constantly discovering more of it because of improvement in the times and technology. Science that proves to be accurate will never be discredited though it will be improved upon .

Answer:

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Explanation:

In the 16th century everyone thought everything revolved around the Earth. It wasn’t till the 17th century that everyone got it right that everything revolved around the Sun. I think both as we get better at understanding things our world becomes bigger and everything could change. One day we could find something different and the next day it will be totally different.

The vocal cords are two bands of tissue that extend across the opening of the: larynx glottis trachea epiglottis

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Larynx is the correct answer

A farmer had an accident and spilled a chemical into his pond. Several days later, he notices many dead frogs around the pond. That summer, the number of gnats around the pond was higher than ever. This is because

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They are breaking down the toxins, I presume.

State two different roles of spleen in the human body ?

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Answer:

The spleen acts as a filter for blood as part of the immune system. It also helps fight against certain kinds of bacteria that cause pneumonia and meningitis.

Fights of infections as it is part of the lymphatic system. It also regulates the blood in the body and gets rid of old and damaged cells.