<span>The rat was taught that when you press the bar you receive food. When the food ran out the rat was still pressing the bar however it wasn't be awarded. The rat then saw that there was no outcome to pressing the button therefore found it to be pointless.</span>
Answer:
Where two organism reproduce and have a offspring like themselves.
Explanation:
"The interphase portion of the cell cycle is relatively long compared to mitosis. Interphase consists of three stages: first gap (G1), synthesis (S) and second gap (G2). The cell replicates DNA only in the S phase. Before the cell can transition from G1 to S, it must clear the G1 checkpoint."
"The S Phase of Interphase. The S phase of a cell cycle occurs during interphase, before mitosis or meiosis, and is responsible for the synthesis or replication of DNA. ... The most important event occurring in S phase is the replication of DNA."
They are unicellular prokaryotes, that are lacking membrane bound organelles.
Answer:
Nowadays, we are having organic vegetables.