Answer:
it is the thymus
Explanation:
this is where the t cells and b cells are made
The three characteristics of the cellular theory are:
all cells came from other cells
all living things are made of cell
the basic unit of structure and function is a cell
lol, that's what we're learning in science.
Multicellular organisms use different types of cells to function not just one cell. If cells grew larger that cell would be more demanding.
Answer:
Option 2, Arousal
Explanation:
Reticular activating system (RAS) or the ascending arousal system consists of nuclei and tracts and is involved in the regulation of wakefulness, sleep aspects and arousal.
RAS is located in the mesopons and interacts with the basal forebrainand thalamocortical systems. It activates the cerebral cortex and thereby maintain the consiusness. The neurons located at the pontomesencephalic junctionparticipates in this activity of arousal.
Hence, option 2 is correct
<span>Transpiration is considered as necessary evil because during CO2 and other gaseous exchange, water also escapes and that could be harmful to the plant.</span>
