Question 4. Populations, communities. Question 5: Biotic factos
Answer: Monopolistic competition
Explanation:
Answer:
The correct option is: (A) stem cells
Explanation:
The bone marrow is a semi-solid tissue which is generally found in the spongy portions of the bones. In the bone marrow, all the blood cells are produced from the unspecialized precursor cells, which are known as the stem cells. Firstly, the stem cells divide and form the immature blood cells. These immature blood cells then further divide and mature to form the mature blood cells.
Therefore, the stem cells are the precursor cells which transform and mature to form the blood cells.
Answer:
C.
Explanation:
Although plants need carbon to make oxygen, it doesn't need carbon to grow. It needs sunlight and water to grow more than anything.
Scientific observations are important as all scientific experiments begin with observations hence option 2 is the correct option.
<h3>Why are scientific observations important?</h3>
Scientific observations are used by scientists to collect and record data, which allows them to put forth and test certain hypotheses and theories.
Scientific observations are done in many ways – by human senses or with machines and tools like microscopes, digital scanners or amplifiers to enhance their vision or hearing.
Observations make what scientists call data and they inspire, support or deny a scientific theory or hypothesis.
Hence, Scientific observations are important as all scientific experiments begin with observations hence option 2 is the correct option.
Refer the following link to know more about scientific observations.
brainly.com/question/27131879
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