What basic needs are provided by an organism's habitat?

How can scientists ensure that their data are reliable?

This chart shows the annual catch statistics for the red grouper for the state of North Carolina during the 1990's. Red grouper begin their lives as females, and the largest fish change sexes to become male during mating season.

Why do plants need sap

How do the expected results differ from the observed results?

What is the location of the parotid lymph node? A. Inside the mouth B. Near the inguinal area c. on either side of the abdomen D. On either side of the face behind the salivary gland

List at least two possible reasons for the differences you see between the pinch strength of the first two fingers and the second two fingers.

What is the ultimate measure of evolutionary success?

Tallness (T) is dominant to dwarfness (t), while red (R) flower color is dominant to white (r). The heterozygous condition results in pink (Rr) flower color. A dwarf, red snapdragon is crossed with a plant homozygous for tallness and white flowers.

Which skeletal disorder involves a deterioration of joint cartilage, leading to joint pain and suffering?

What types of substances can pass through the lipid bilayer?