A bag contains purple marbles and white marbles, 82 in total. The number of purple

marbles is 2 more than 4 times the number of white marbles. How many purple

marbles are there?

is carbon atoms move between the atmosphere and organisms connecting earths biosphere and atmosphere true or false

A marine biologist measures the density of oyster larvae, in number of larvae per liter of seawater, at four different sites in a coastal habitat over three days. The table below shows her results.

Describe 4 different stages of a river

What would happen if introns were not removed during RNA processing? Translation would not begin The protein would be the same but much less would be made The protein would be incorrect and the protein might not function Nothing would happen because

What forms as the front boundary advances and pushes an air mass up

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