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Shkiper50 [21]
4 years ago
8

The oxygen build-up in the atmosphere was caused by

Biology
1 answer:
Y_Kistochka [10]4 years ago
3 0

Answer:

Actually, The answer is tiny organisms known as cyanobacteria, or blue-green algae. These microbes conduct photosynthesis: using sunshine, water and carbon dioxide to produce carbohydrates and, yes, oxygen. "What it looks like is that oxygen was first produced somewhere around 2.7 billion to 2.8 billon years ago. Harmful cyanobacteria blooms may affect people, animals, or the environment by: y blocking the sunlight that other organisms need to live. Cyanobacteria blooms can steal the oxygen and nutrients other organisms need to live. y making toxins, called cyanotoxins.

Explanation:

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Regarding fluid shifts and dehydration, when adh secretion increases to regulate sodium balance by means of increased water rete
Gennadij [26K]

Antidiuretic hormone (ADH) is a peptide hormone secreted by the hypothalamus that allow water reabsorption to occur and regulate sodium balance. When there is an increase in ADH secretion, the sodium levels in extra cellular fluid (ECF) will also increase as compared to the original condition.

5 0
4 years ago
A 6-year-old child with a mental age of 6 would have an iq of _____.
zhenek [66]

The IQ reflects the relationship between a childs metal age (MA) and his or her actual or chronological age(CA). One way of determining the IQ of the child is to use the mathematical expression derived by Wilhelm Stern. Stating that,

IQ=MA x 100/CA

where MA is the Mental Age and CA is the chronological age.

Thus, the IQ for a child having a Mental Age of 6 and a chronological age is 6,

 

IQ=6 x100/6 =100

 

<span>Thus the IQ of the child is 100.</span>

4 0
4 years ago
Where does the carbon that plants use for photosynthesis come from?
blondinia [14]
The carbon that plants need for photosynthesis comes from carbon dioxide, or CO2 that's present in our atmosphere.
6 0
2 years ago
Some villagers plan to remove the trees from this hillside.
Sauron [17]

Answer:

1) Deforestation has real consequences for animals. The most serious impacts of deforestation on animals are listed below. #1 Habitat loss Deforestation can lead to a direct loss of wildlife habitat as well as a general degradation of their habitat.

2)When there is less soil stability because of the disadvantage of erosion, the risk of a flooding event occurring during the rainy season increases dramatically. Poor water absorption levels make it easier for higher accumulation levels since the trees are no longer present to take up the extra moisture.

Explanation:

5 0
3 years ago
How many factors should a well-designed experiment test at one time?
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