What is the purpose of the lateral line system on fish?

The Phylum Echinodermata includes which animals:

What part of this egg is labeled at 57.? amniotic egg.jpeg  

What characteristic(s) make arthropods so successful?

Included Family Hominidae, the great ape family, are __________.

Which trophic level is most vulnerable to extinction?

Platyhelminthes have an incomplete digestive system. What is the main structure of their digestive system?

The symbols +, -, and 0 are to be used to show the results of interactions between individuals and groups of individuals. The symbol + denotes a positive interaction, – denotes a negative interaction, and 0 denotes where individuals are not affected by interacting. The first symbol refers to the first organism mentioned. What interactions exist between arbuscular mycorrhizal fungi and plant roots?

Which of these is NOT one of the conservation ethics?

Which of the following threaten biodiversity?