Explain why the changes seen in the petri dishes support the statement that cells are the building blocks of life.

Initially, what was observable was that the cells in the Petri dishes were very similar and alike. After some time had passed, they differentiated into more complex forms.

Explanation:

Cells have the capacity to go from a simple life form to a complex whole with various body parts that have the capacity to execute varying complex levels of functions.

So from a simple unicellular life form, we see (through the multiplication of cells) the formation of reproductive spores and gametes begin to take shape.

This is why cells are called the building blocks of life. At the start, it's just one cell, then cell reproduction takes place and we have a larger life form.

Cheers!

these are common warning signs of overtraining syndrome:

washed-out feeling, tired, drained, lack of energy

mild leg soreness, general aches, and pains

pain in muscles and joints

sudden drop in performance

insomnia

headaches

decreased immunity (increased number of colds, and sore throats)

decrease in training capacity/intensity

moodiness and irritability

depression

loss of enthusiasm for the sport

decreased appetite

increased incidence of injuries.

a compulsive need to exercise