Which of these is a difference between a single skin cell and the skin tissue that covers an entire hand? A.
A skin cell has a less complex structure than skin tissue has.
B.
A skin cell provides protection, but skin tissue does not.
C.
A skin cell grows more than skin tissue grows.
D.
A skin cell contains fluid, but skin tissue does not.

Which characteristics can be used to differentiate star systems? check all that apply.

Structure of the atoms: discovery of the nucleus in 1909i need answering all of these questions

Astudent pours 10.0 g of salt into a container of water and observes the amount of time it takes for the salt to dissolve. she then repeats the process using the same amounts of salt and water but this time she slowly stirs the mixture while it is dissolving. the student performs the experiment one more time but this time she stirs the mixture rapidly. the dependent variable in this experiment is: time for salt to dissolve speed of stirring amount of water mass of salt