Base your answers to questions 1 and 2 on the rock columns below and on your knowledge of Earth
science. The rock columns represent four widely separated locations, W, X, Y, and Z. Number 1, 2, 3,
and 4 represent fossils. The rock layers have not been overturned.
Location W
Location X
Location Y
Brown
siltstone
Tan
limestone
Black
shale
Location z
Food Gray
Gray
conglomerate
Booa
Tan
limestone
Red
sandstone
Brown
siltstone
Gray
limestone
Black
shale
Red
sandstone
Tan
sandstone
Brown
siltstone
Gray
limestone
Black
shale
Gray
siltstone
Red
sandstone
Tan
sandstone
Gray
limestone
Green
shale
Black
shale
1. Which rock layer is the oldest?
A) tan sandstone B) gray limestone C) green shale
D) black shale

Pepsin is an enzyme in the stomach that breaks polypeptides into amino acids. pepsin functions best at a ph of around 1.5. what would be the most likely result if the ph of the stomach were increased to 5

Be in this im starting a with you so if you want you can get a partner for this. but basically im going to assign you guys a biome and you have to have a big sheet paper and you will turn it into 4 squares. the top right square is will be a drawing square for a drawing you will make of your biome. the top left square is about the biomes plants and drawings of them. the bottom left square is about the biomes animals. the bottem rights square is about the description of the biome. leave a comment or an answer and i will assign biomes. if your request one thats the one you get. send me a link to the project and i will grade ! im not a teacher btw.

If an organ has six haploid chromosomes,how many chromosomes are present. 6 12