What is the primary energy source in the food chain?

A Producers
B Primary consumers
C Secondary consumers
D Sun

Explain the source of radioactivity in uranium in earth’s crust by which it produces nuclear radiation

Match each phylum or class to its correct characteristic

Whenever diploid populations are in hardy-weinberg equilibrium at a particular locus a) the allele's frequency should not change from one generation to the next, but its representation in homozygous and heterozygous genotypes may change. b) natural selection, gene flow, and genetic drift are acting equally to change an allele's frequency. c) this means that, at this locus, two alleles are present in equal proportions. d) the population itself is not evolving, but individuals within the population may be evolving.