Drag each tile to the correct box. Arrange these steps of DNA replication in the order in which they occur. RNA primase synthesizes RNA primer, which attaches itself at the initiation point. Polymerase begins synthesizing the new strands. Single-strand binding proteins prevent the strands from snapping back to the original DNA structure. Ligase joins the Okazaki fragments. Helicase unwinds the parent DNA strand. ↓ ↓ ↓ ↓

Use the drop-down menu to match the following definitions to the corresponding terms. the total variety of organisms that live in the biosphere a group of organisms that breed and produce offspring that can breed all of the biotic and abiotic factors in an area

(drag each tile to the correct identify which questions can be answered by what can be answered by science or which cannot. -is it right or wrong to use genetic engineering to produce new food products? -what are the most common social settings that tend to produce accomplished artists? -if a new gene is added to the genome of a tomato species, will that species be more resistant to insects? -should humans use biotechnology to bring extinct organisms from the fossil record back to life? -do the types of organisms found in the fossil record appear in consistent sequences in different parts of the world? -are michelangelo's paintings more impressive than rembrandt's?

Hurry which of these is true about index fossils? a) are very scarcely found b) used as guides in relative dating c) found in the youngest layer of the rock d) used as reference points in absolute dating