Absolute dating uses the half-life of an element.
For number one the answer is Punnet square. For number two the answer is first generation and for number three the answer is TT so letter D! I hope this helps you!
Researched (copied and pasted so use in your own words)
Disturbances such as forest thinning, floods, fire and wind can all lead to secondary succession. Examples of secondary succession are the gradual replacement of old fields by forest or the vegetation recovery and change following wildfire occurrence.
Answer:
The nucleus contains a cell's DNA.
