The correct answer in the space provided above is Non REM
stage 2. It is because by this stage, the person drifts to sleep that made the
body temperature drop, the slow heart rate to occur and as well as the
breathing to become more shallow in which is mentioned in the statement above.
<span>Answer: Cellular differentiation is responsible for one daughter cell becoming a sieve tube whereas the other becomes a companion cell. Cell differentiation occurs as different genes are switched on and off.
Hope this answer helps!</span>
Answer:
Solidifications of molten materials.
Answer:
Nitrogen is so vital because it is a major component of chlorophyll, the compound by which plants use sunlight energy to produce sugars from water and carbon dioxide (i.e., photosynthesis). It is also a major component of amino acids, the building blocks of proteins. Without proteins, plants wither and die.
