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.
Village anthromes are where rulal populations are densest agriculture is most intensive and landscapes include towns and even small cities villages are both densely populated and intensively cropped, while also incorporating a mix of urban areas forest and cultivated lands
The selection that acts over evolutionary time to preserve traits that increase an individual's ability to mate is known as se_xual selection.
<h3>What is se_xual selection?</h3>
The expression 'se_xual selection' makes reference to the type of evolutionary constraint on the individual's ability to mate.
Se_xual selection is fundamental to increase the genetic variation and thus enhance adaptive chances.
Se_xual selection can be considered a special type of natural selection that acts at an individual level.
Learn more about se_xual selection here:
brainly.com/question/3603359
- Energy
"Matter is recycled, but energy is not. In an ecosystem, matter is represented by the presence of biogeochemical elements such as Hydrogen, Carbon, Nitrogen, Oxygen, Phosphorus and Sulfur."
Energy is needed to cause a change in the state of matter because adding energy to matter causes a physical change as matter moves from stage to another.
