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3 years ago

Why bacteria in the soil. are necessary in this ecosystem 8th Grade Science

2 answers:

6 0

There could be a lot of reasons. To help break down food for the plants, kill off bad and harmful things that might damage the plant.

kakasveta [241]3 years ago

3 0

Bacteria are important in the soil to maintain the nitrogen cycle. Certain type of bacterais help in nitrogen fixation. They also decompose dead and decaying matter into nitrogen compounds such as ammonia. The nitrogen and nitrogenous compounds in turm help the plant to grow.

When the plant dies, the bacteria again decomposes it into nitrogenous compounds. Not only plants, but also animals. The nitrogen then passes through various stages and then gets back to atmospheric nitrogen. Bacteria is an important part of this nitrogen cycle.

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What did gregor mendel want to find out when he decided to study pea plants.

Alexxx [7]

Answer:

How traits/characters were passed down and inherited from parents to offspring.

7 0

2 years ago

You are a doctor treating a patient who has recently experienced paralysis in his lower body. He asks you to give him more infor

matrenka [14]

The laboratories have initiated Phase 1 clinical trials for the use of human pluripotent embryonic stem cells to treat paralyzed patients following spinal cord injury. The first step is to estimate the risks and tolerance of cell transplantation in a man. The fate of stem cells (multipotent or pluripotent) in the body is still poorly understood, and it is not excluded that uncontrolled cell multiplications occur, leading to the appearance of teratomas (tumor developed from pluripotent cells).

Advantages are:

* The safety of the cells also seems to be proven (in short term)

* Rats transplanted seven days after the injury had benefited from reactivation of myelinization of neurons by oligodendrocytes, attenuation of motor neuron loss and improvement of limb motor function.

The disadvantages are:

* Constraints of the ethical and religious order, it is necessary the consent and the approval of the donor and the recipient for the transplant to take place.

* The development of the technique is still new, there is a chance that side effects of the transplant appear years after the operation.

6 0

3 years ago

What was the work of Rudolf Virchow trying to prove?

Aleksandr-060686 [28]

The answer is letter C. That spontaneous generation didn't happe

Rudolf Virchow tried to prove that whatever cells existed had to come from pre-existing ones.

Thank you for posting your question. I hope you found what you were after. Please feel free to ask me more.

7 0

3 years ago

Read 2 more answers

Drag the tiles to the correct boxes to complete the pairs.

AfilCa [17]

Genes close to each other- Strongly Linked genes

Genes on different chromosome- unlinked genes

Genes apart from each other,but on same chromosome- linked genes

Explanation:

Linkage is defined as the tendency of genes located on same chromosome to be inherited together.

Genes located on different non-homologous chromosome are called unlinked genes.

Genes located on same chromosome are called linked genes.

Genes located close to each other are strongly linked as tend to show complete linkage.

Genes located on different chromosome tend to show incomplete linkage.

5 0

3 years ago

Emotion has been defined as having three elements. please identify which choice below is not one of the three elements.

andrew-mc [135]

The three elements of emotions are:
1.Behavior which reveals the feeling to the outside world
2. Inner awareness of feeling
3. Physical arousal
The cognitive dissonance for the exhibited behavior is not an element of emotions.

3 0

3 years ago