Answer:
False
Explanation:
Honeybee drones are not responsible for gathering nectar or pollen and returning it to the hive (this is the role of worker bees). Rather, the sole purpose of the drones are to mate with hive's queen by fertilizing the eggs that she lays.
The brain communicates by sending signals down the neurons this is called the nervous system<span />.
Answer:
The 'Mole'
Explanation:
In the International Systems of Units i.e. SI, mole is the unit for the measurement of the amount of substances, or in simple terms the number of microscopic molecules or particles in a given sample is measured in mole. It is denoted by the symbol 'mol'.
If in a given sample there are 1 mole particles or molecule then it means that the total number of particles or molecules in that sample is equal to the Avogadro's number and this number has a value of . Mole is used as a measurement unit for various types of microscopic particles like atoms, molecules, ions electrons.
Answer:
Option C, disruptive selection
Explanation:
Disruptive selection selects features and traits which are against the average population. The population would have extreme phenotypes but nothing in middle of that and hence could lead to deviation.
The higher percentage of male human population has deeper voice as dominant characteristics. The intermediate male population with a finer or less deep voice is small. As per the disruptive selection theory, the traits at the extremities are favored more over and above the mediocre traits and hence intermediate species (males with less deep or fine voice) will compete among themselves to produce species with ability on the extremes i.e deep voice or with higher level of testosterone.
Hence, option C is correct