Which part of a scientific argument must be supported by valid data? ▪a) claim▪b) evidence▪c) reasoning▪d) theory

Ectocarpene is a volatile, sperm cell-attracting material released by the eggs of the seaweed ectocarpus siliculosus. its constitution is all the double bonds are cis, and the absolute configuration of the chirality center is s. draw a stereochemically accurate representation of ectocarpene.

What did not occur in the proterozoic eon a)the oxygen levels increase greatly in the atmosphere,b)the emergence of the eukarya , c)muti cella’s eukaryotic organisms began to diversify,d)anaerobic bacteria kept thriving with more oxygen

Fungi are classified into how many groups? a. 1 group b. 2 groups c. 3 groups d. 4 groups