Answer:
The answer is A
By the late 1830s, botanist Matthias Schleiden and zoologist Theodor Schwann were studying tissues and proposed the unified cell theory. The unified cell theory states that: all living things are composed of one or more cells; the cell is the basic unit of life; and new cells arise from existing cells.
B becoz they r absent in prokaryotes
A Punnett Square is a chart in which you cross two parents' offspring to figure out what traits their offspring may have. It helps give an estimate of the probability of the child having different attributes, such as eye color or hair color through the use of dominant and recessive alleles.
Answer: hypothalamus
Explanation: The body's system for regulating food intake is coordinated by the hypothalamus, which is located under the midline of the brain, behind the eyes: Within the hypothalamus are nerve cells that, when activated, produce the sensation of hunger.