Answer:
The amount of light they receive.
Explanation:
In an experiment, the independent variable is the part of the experiment that the experimenter changes. In this experiment, the only thing that's different for each of the plants is the amount of light they receive. Everything else is the same - the same amount of soil, same amount of water, same pots, and so on.
B cells engulfs bacteria or toxin and then digests it. Then , it represents the antigen on its surface. The b proliferates into memory cells and plasma cells(they act of the foreign substance). Eventually a helper t cell comes on it's way and triggers more cells.
Working in a lab means working under controlled environment. If in the generation 1 and generation 3, the number of bird’s increases or decreases in number, the possible conditions for this would
- The amount of food increased or decreased
- If a flock’s beak type made it easier to pick up the available food, the flock grows and vice versa
Justification: if the beak type for generation 1 makes the food intake easier, it will grow which ultimately decreases the food for the generation 3 which has un-supportive beak type.
<span>Three months of age is a typical time for a major growth spurt. Gaining weight, growing in length are common at this age. He may begin eating a lot more as well.</span>
Bryophytes are known as non-vascular plants - what makes them non-vascular is the a<span>bsence of xylem and phloem.</span>
