What materials can be used to erase part of a document?

Chemicals

Eraser

Sandpaper

All of the above

If you saw two populations of a species of snail, separated by a water-filled valley that they could not cross, you might eventually expect to see speciation due to

Organisms of prokaryotes

What was Frederick mieschers contribution to the discovery of genetic code

How many people are added to the world population each year? 10 million 60 million 20 million 70 million

What is speciation in general? briefly describe the difference between allopatric speciation and sympatric speciation. be sure to include under what sort of conditions each type might occur?

Sleep is a biological function, true or flase

If the central valley aquifer system is the largest basin-fill aquifer system in the united states why does California have an insufficient water supply

What is the most common type of skeleton

Whats a pure substance that cant be broken down into simpler substances by chemical or physical means

The relationship between a gene and a messenger RNA is as follows:a. mRNAs are made from genes. b. Genes are made from mRNAs. c. mRNAs make proteins which then code for genes. d. Messenger RNA is directly responsible for making Okazaki fragments. e.