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Oksanka [162]
3 years ago
8

What causes the different time zones?

Biology
1 answer:
Korvikt [17]3 years ago
5 0

Answer:

The need for continental time zones stemmed directly from the problems of moving passengers and freight over the thousands of miles of rail line that covered North America by the 1880s. Since human beings had first begun keeping track of time, they set their clocks to the local movement of the sun.

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Why does the hatchery not use formaldehyde to clean eggs<br> i need it fast please
almond37 [142]

Answer:

Losses due to microbial contamination of hatching eggs in the poultry industry can run into millions of Euros. Fumigation with formaldehyde gas is an effective way of disinfection before and during incubation as well as near hatching. In addition, formaldehyde is also hazardous to human health.

Explanation:

Hope this helps!!!!!

Forever friend and helper,

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7 0
3 years ago
During the light reactions, the pigments and proteins of ____________ use light to send energized electrons through an electron
Nataly [62]

Answer:

The correct answer is - photosystem II; ATP; water; oxygen

Explanation:

The photosynthesis process involves two different cycles known as the light reaction and the dark reaction. In light reaction there are two photosystems; photosystem I and photosystem II.

During light reaction, there are several pigments such as chlorophyll a and other pigments present in photosystem II that trap the light and transfer excited electrons through ETC to produce ATP which is a form of energy used by cells.

A water molecule takes place of the excited electron that is transferred and releases oxygen as waste or byproduct in this reaction.

5 0
2 years ago
How contour farming can solve <br> two environmental problems.
jasenka [17]

Answer:

1. reducing soil erosion,

2.Controlling runoff water

Explanation:

Contour farming mitigates the impacts of floods, storms and landslides on the crops by reducing soil erosion up to 50 percent, controlling runoff water, increasing moisture infiltration and retention and thus enhancing soil quality and composition

3 0
3 years ago
Vascular plants have vascular tissues and they are larger than nonvascular plants.
raketka [301]

Answer:

true because of elongation

7 0
2 years ago
In rabbits, black fur (B) is dominant to brown fur (b).
malfutka [58]

<span>1. Heterozygous black rabbit will have genotype Bb</span>

2. If a heterozygous black rabbit and a brown rabbit were crossed:

<span>Bb  x bb</span>

The offspring will be:

Bb Bb bb bb

Which means that half of them will be black and half brown (50%).

7 0
3 years ago
Read 2 more answers
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