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thanks so so much!!

Hi, i am having trouble with this question. I need one more common metal that is used in construction industries. I already have steel, aluminium and titanium but cant find anymore. Thanks in advance!

what is the significance of bacteria's small size on their pathogenicity?

thanks so much!

Hi, what are the products of nitrite (NO2-) and ozone (O3)??? the chemical equation??

Hi, i am doing a science experiment and need to know how tea tree oil actually kills bacteria, like does it inhibit growth, stop DNA replication etc. I only know that the active ingredients is terpin-4-ol. thanks

i have know idea about the answer to this question.. what are the advantages and disadvantages of the gas exchange methods used by frogs and insects. I know that frogs use the pressure pump method and insects use direct diffusion but thats about all. Thanks!

thanks that really helped!

hi, i have no idea about this qu for biology. Some algae that live in water have their photosynthetic cells in a layer around their outer surface. Explain the significance of this arrangement.