The arthropods are the most successful group of animals; several key features explain their success. Check all of the features that one would use to classify members into this phylum. Check All That Apply Growth takes place through ecdysisGrowth takes place through ecdysis A rigid exoskeleton made of chitinA rigid exoskeleton made of chitin Closed circulatory systemsClosed circulatory systems Jointed appendagesJointed appendages A rigid exoskeleton made of keratinA rigid exoskeleton made of keratin Segments specialized into functional tagmataSegments specialized into functional tagmata

Idon’t know the answer and i’ve been stuck on it for a while now skskskskks

Which is the function of the hypothalamus in thermoregulation? answers: -sensor -effector -stimulus -intergrating center it's either a or c i believe

Abody cell has been growing and at synthesis proteins.in the nucleus of this body cell,dna replication is taking place. and a copy of the cells genetic material is copied.which of the following is the best conclusion you can make about the life cycle of this cell ? a) the cell is ready to undergo mitosis.and a chemical signal will send the cell to prophase b)the cell is undergoing meiosis and will cross over the genetic material next c)the cell is in the s phase of interphase and will move next to the g2 phase d) the cell is in the g2 phase of the interphase and is ready to begin diving