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3 years ago

Diatoms have cell walls composed of _____.

Biology

2 answers:

AleksAgata [21]3 years ago

8 0

Answer:

Diatoms have cell walls composed of silicon dioxide.

BlackZzzverrR [31]3 years ago

6 0

The correct answer is a - silicon dioxide.

Diatoms are single celled algae. They have a silica - based cell wall called a frustule, which gives each diatom a particular shape.

Diatoms exist as separate single cells although some may be found in groups or colonies. The ones found in colonies create very pretty forms: leaf shaped, oval , star and even like a period.

Outer shells of diatoms are quite valuable. They are used in industry in the manufacture of toothpaste to give it grit.

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the drinking water in a location in florida had a foul odor and taste. investigatiors revealed that storm water runoff had carri

puteri [66]

Answer:

The drinking water in a location in Florida had a fall order and test and this happened due to the storm water runoff that had carried huge amounts of soil and minerals into it.

The solution for this problem is that the people of that local area should practice afforestation.

Explanation:

Afforestation is defined as a process of planting more and more trees in an area. The plants are helpful for the people and environment in many ways. The most important thing is that the plant reduces the soil erosion in an area.

The root of the plant and small hub tends to hold up the soil and prevent them to flow away from the high speed runoff water into the water body.

Also it provides the favorable conditions for more animals and birds. It also provide fresh air to the local people to inhale and utilizes all the carbon dioxide.

5 0

3 years ago

Match each organ or function with its body system. Skin excretes waste nails kidneys bladder provides exterior barrier

zloy xaker [14]

Answer:

Skin: The skin acts as a barrier against external agents that could affect such as microorganisms, changes in temperature, etc.

Excretes waste: The excretion process, is done mainly by lungs (release of carbon dioxide), kidneys (elimination of excess compounds such as nitrogen) and the skin (sweat regulates temperature but also regulates the concentration of salts within the body)

Nails: It protects the soft tissues surrounding the distal phalanx, but it also exerts pressure over on the digits which allows more precission in the movements.

Kidneys: Eliminate waste from the blood and regulate body fluids, by generating urine.

Bladder: In charge of storing the urine produced by the kidneys, for the urination process to be controlled and not so frecuent.

5 0

3 years ago

The red shifts of quasars and connected galaxies can be different by billions of light-years.

lara [203]

Answer: True

Explanation:

Its true.

Hope it helped you.

4 0

3 years ago

Pea plants heterozygous for flower position and stem length (AaTt) are allowed to self-pollinate, and 400 of the resulting seeds

7nadin3 [17]

Answer:

AT At aT at

AT AATT AATt AaTT AaTt

At AATt AAtt AaTt Aatt

aT AaTT AaTt aaTT AaTt

at AaTt AaTt aaTt aatt

The results of the punnet square show that one out of 16 offsprings will have both the qualities of having terminal flowers and being a dwarf.

A punnet square can be described as a diagram which depicts the likely outcomes of a cross. In the above punnett square, for the plants to have both terminal flowers and to be dwarf, both the alleles should be recessive for the traits.

7 0

3 years ago

Which of the following types of electromagnetic radiation has the longest wavelength

nika2105 [10]

we aren't given options but in order from longest to shortest it is radiowaves, microwaves, infared,visible light, ultraviolet, x rays, gamma rays

5 0

3 years ago

Read 2 more answers