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2 years ago

Describe plant with lower epidermis function

1 answer:

5 0

The lower epidermis layer contains stomata. Stomata prevent the loss of water and regulate the exchange of oxygen and carbon dioxide. The lower epidermis may also contain a waxy layer to further prevent water loss. Plant with these features are typically the xerophytic plants, which grow in arid conditions.

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How do you get the pH of a solution closer to neutral?

pashok25 [27]

Answer: You can add neutral solutions with a pH of 7, like water. Water will dissolve the alkaline/acidic pH to near 7 and 8, which are safe to drink.

Hope this helps you!

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3 years ago

What happened to most freedmen after the Civil War?

jasenka [17]

Answer:

D. They rented farmland from white landowners.

Explanation:

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2 years ago

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When a living organism dies, it stops taking in new carbon. Thus, as the radioactive carbon-14 decays, the ratio of carbon-12 to

Alexxandr [17]

Answer: The fossil is 11459 years old.

Explanation:

Half-life of carbon-14 = 5700 years

First we have to calculate the rate constant, we use the formula :

$k=\frac{0.693}{5700\text{years}}$

$k=1.21\times 10^{-4}\text{years}^{-1}$

Now we have to calculate the age of the sample:

Expression for rate law for first order kinetics is given by:

$t=\frac{2.303}{k}\log\frac{a}{a-x}$

where,

k = rate constant = $1.21\times 10^{-4}\text{years}^{-1}
t = age of sample = ?
a = let initial amount of the reactant = 100 g
x = amount decayed = 75 g
a - x = amount left after decay process = 100 - 75 = 25 g Now put all the given values in above equation, we get
[tex]t==\frac{2.303}{1.21\times 10^{-4}}\log\frac{100}{25}$

$t=11459years$

The fossil is 11459 years old.

4 0

2 years ago

Fruit flies have 8 chromosomes in their body cells, while dandelion cells have 16 chromosomes. Which species do you predict make

Finger [1]

Answer:

I think this might be the answer

Explanation: The answer is the same for every diploid species. It is half the number of chromosomes in somatic (body) cells. The number of cells in gametes (sex cells) is n and the number in somatic cells is 2n. For fruit flies gametes have 4 chromosomes, for mice, 20, for humans 23, for chimpanzees 24.

Hope this helps and stay safe.

4 0

3 years ago

If you use a microscope to view an unknown cell, what structure should you look for to tell you if it is a eukaryotic cell?

Nutka1998 [239]

Answer:

If you use a microscope to view an unknown cell, should you look for a <em><u>nucleus option D.)</u></em> to tell you if it is a eukaryotic cell

Explanation:

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2 years ago

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