In sedimentary rock the oldest fossils would be expected to be found

A. In the top layer of rock

B. In the middle layers of rock

C. In the bottom layer of rock

D. Spread throughout all of the layers of rock

What a pancreas used for

Which is the most likely function of a group of cells that contains a higher number of mitochondria? why? respiration transpiration fermentation photosynthesis

How does a moth obtain resources?

What chemical ion is responsible for initiating the contraction of a muscle fiber?

All wild birds of the same species sing the same song. How do the birds learn their species song?

A cell contains a 30% solute concentration and 70% water concentration. If the cell is placed in a solution that is 60% solute and 40% water, what will happen to the cell, and what condition is the cell in?

During upwelling, nutrient-rich water rises to the surface. How would this most likely affect the biotic components of the ecosystems where the upwelling is taking place?

Determine whether each activity impacts land resources in a positive or negative way. Drag each term to the correct category.

1. List 2 examples of positive feedback loop in you body 2. List 2 examples of negative feedback loop in your body

Which of the following genotypes is homozygous recessive? A.) ss B.) Bb C.) TT D.) XY