Conducting experiments in a lab involves operating in a controlled setting. If the populations of birds in generation 1 and generation 3 fluctuate, potential reasons could include: - Changes in the availability of food - If a flock's beak type facilitates food gathering, that flock might thrive, and the opposite could lead to a decline. Justification: If generation 1 has a beak type that aids in food intake, it will expand, potentially diminishing food resources for generation 3, which may feature a less advantageous beak type.
Answer:
Explanation:
The pH formula is given by
![pH = -[log H+]\\](https://tex.z-dn.net/?f=pH%20%3D%20-%5Blog%20H%2B%5D%5C%5C)
It's also stated that each pH unit indicates a tenfold change in hydrogen ion concentration.
For lemon juice with a pH of 2, the hydrogen ion concentration is
While for pure water, which has a pH of 
, the concentration is
Thus, the concentration of H+ ions in lemon juice is 
times greater than in pure water.
Answer:
The count of cells observed will rely on the dimensions of both the cells and the size of the red circle on the slide.
Explanation:
Cells come in varying sizes and this variation affects how many cells can be seen through a microscope. The way the smear is prepared also plays a role, as does the amount and type of dye used on the slide.
In conclusion, the number of cells visible is somewhat subjective and can only be definitively calculated through experience.
Answer:
d. One additional neutron
Explanation:
Phosphorus-32, a radioactive variant of phosphorus, possesses 15 protons and 17 neutrons.
Conversely, Phosphorus-31, the most prevalent isotope of phosphorus, contains 15 protons and 16 neutrons.
This indicates that one isotope has one more neutron than the other.
