The structure that mollusks use to excrete wastes is known by the name of nephridia. Among all the options that are given in the question, the correct option is option "b". Mollusk is the other name for shellfish. there are three varieties of shell fish present. Hatcher footed, Belly footed and head footed variety of shellfish are available.
Answer: mutualism
Mutualism is a symbiotic relationship, between two organisms, living in close association with each other. In this relationship both the organisms gains benefit. Both organisms are dependent on each other for competing their life cycle.
The given situation is an example of mutualism because both the species are benefited for the relationship. Birds receive food from strawberries in turn birds disperse the seeds of strawberry to promote growth of more strawberry plants. Both organisms are interdependent on each other.
Mahir noticed the plants he watered grew taller than those with less water is the scientific observation because mahir observed the experiment he led
D. Cubic describes the mineral's crystal shape
