In addition to comets, water for Earth's early oceans might have come from A. cyanobacteria. B. rivers. C. rain. D. volcanic eruptions

Which elements are most likely to undergo the same kinds of reactions, those in a group or those in a period?

In Wisconsin, a very large population of lake trout, in which individuals mate at random, experiences no migration, mutations, nor selective pressure for a number of years. Which of these is most likely to occur in the population?

How does nuclear fusion differ fundamentally from nuclear fission? Nuclear fusion combines atomic nuclei. Nuclear fusion doesn't produce energy. Nuclear fusion is a cold process. Nuclear fusion splits atomic nuclei.

Name two sorts of decomposer.

Incubation time for the decarboxylase medium is 1 week. Under what circumstances would an early reading be allowable? explain

The table below shows the number of the sub-atomic particles in an atom of nitrogen. Sub-atomic Particles Sub-atomic Particle Number Protons 7 Neutrons 7 Electrons 7 What is the amu of a nitrogen atom?

The ions in a compound form and orderly three-dimensional arrangement called a molecule. true or false

How would a scientist study the relationship between the Tiktaalik roseae and modern fish and tetrapods? create a diagram that hypothesizes ancestry use relative dating use transitional fossils to determine age review its analogous structures

In fruit flies, the gene for red eyes (r is dominant and the gene for sepia eyes (r is recessive. if a red-eyed heterozygous fly (rr mates with a sepia-eyed homozygous fly (rr, what are the possible genotypes of their offspring?

The largest mass extinction event in the history the Earth occurred at the end of the ___ period. A. Cambrian B. Ordovician C. Devonian D. Permian