The answer is B, it is the only answer that talks about electric signals.
A by creating a punnet square you can see that the outcome are St st St st
Answer:
D
Explanation: Think of africa.
There are many factors that may contribute to the tree's weight gain, for example soil, air, sunlight, water and minerals in the soil. an example is as plants need to photosynthesis to make food and they also produce. glucose and oxygen in the process and the mass probably increased due to the storage of the products made.