Type your response in the box. Based on the characteristics described, which category do you think humans belong to? Why do
you think they fit in this category?
porifera
cnidaria
nematoda
annelida
echinodermata
platyhelminthes
mollusca
arthropoda
chordata
Jollyrish natworms
round worms mollusk ragmented insects Starfish
worms spiders
backbo
segmentation
endoskeleton
coelom
body cavity
bilateral symmetry

in 1859, charles darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. he defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".

here is the answer

water, ice, acids, salts, plants, animals, and changes in temperature are all agents of weathering. weathering is the breaking down or dissolving of rocks and minerals on earths surface. once a rock has been broken down, a process called erosion transports the bits of rock and minerals away.