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lara [203]
3 years ago
12

I need help ...please seriously

Biology
1 answer:
yarga [219]3 years ago
5 0

Answer:

I think the answer is B

Explanation:

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How can we bring back lost nutrient   in   the soil without direct application   of   fertilizer?​
bazaltina [42]

Answer:

Explanation:

Crop rotation

Rotation of crop is important to help conserve nutrients that are available in the soil and prevent total use up of the nutrients. The same type of plants all year round on the same soil keeps on draining the land of the same nutrients needed for their growth. Rotation of different can help maintain soil nutrients level as some crop fixes nutrients in the soil.

Natural mulching

The use of cover cops as mulch helps protect the soil and allows for retention of nutrients. When cover crops are harvested the leaves can be turned back into soil to release nutrients that are stored up in the plant part.

Composting is the process of decomposing organic matter this could include animal waste such as dung,leaves both green and dead, kitchen. This waste are stored up, little water is added to moist and then allow to decompose it can be mixed together after few days to aerate after. After decomposing to form compost it can be added to the soil. It is usually rich in nutrients.

4 0
3 years ago
The continuous, low-level extinction of species is referred to as ___ extinction.
Mice21 [21]

The continuous, low-level extinction of species is referred to as mass extinction.

  • A widespread and quick decline in the diversity of life on Earth is known as an extinction event.
  • A sudden shift in the diversity and abundance of multicellular creatures serves as a telltale sign of such an occurrence. It happens when the rate of diversification outpaces the rate of extinction.
  • A mass extinction event occurs when a species disappears far more quickly than it is replaced.
  • This is typically understood as the loss of almost 75% of all species over a "short" period of geological time, or fewer than 2.8 million years.
  • The Cretaceous-Paleogene extinction, sometimes known as the day the dinosaurs died, is the most well-known of all the mass extinction events.

learn more about mass extinction here: brainly.com/question/1048615

#SPJ4

4 0
2 years ago
Fruit flies have a diploid number of 8, and honeybees have a diploid number of 32. In which case will crossing over have greater
skelet666 [1.2K]
Diploid cells are like daughter cells coming from a mother cell called a haploid cell. So the more daughter cells are born, the greater the chance of getting hybrids and creating more diversity on the genetic races existing. In this case, the answer would have to be honeybees.
6 0
3 years ago
Which of the following substances is a weak base? .... lemon juice , vinegar , sea water , or pure water
larisa [96]
Pure water is your answer
8 0
3 years ago
An air pressure of 1,005 millibars is equivalent to approximately how many inches of Mercury?
N76 [4]

1005milibars of pressure corresponds to 29.68inches of mercury.

Option D.

<h3><u>Explanation:</u></h3>

Mercury has a density of around 13.6gm/cc. Thus the pressure of inches of mercury will have a huge effect on the value. As far as bar is concerned, it's around the normal atmospheric pressure measured at sea level. Its around 1,00,000 pascals. So from converting a pressure at millibars to inches of mercury, we need to divide the value by a factor of 33.864.

So, pressure in milibars =1005milibars.

So, pressure in inches of mercury = 1005/33.864 = 29.68 inches of mercury.

6 0
4 years ago
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