Example answer number one
Answer:
A
Explanation:
A) adaptations that cause a disadvantage to the species are selected against and do not become common in the population.
Gulls, crows and herons are all opportunists. They'll eat just about anything that they can get their beaks on. That includes fiddler crabs.
Independent variable: The difference in the amount of water the plants are fed. Dependant variable: the health of the plants . Control variable: temperature, amount of sunshine, type of plant amount of co2,
ascon type of canal system is the one with the flagellation spongocoel. it is the simplest type of canal system. in this type of canal system water enters through ostia into spongocoel and excrete through osculum sponge with ascon type of canal system is called as asconoid sponge leucososlenia
