Primitive man used butter as what?

Phospholipids are used: a. to form water b. to organize the dna of the cell c. to form the membrane of the cell d. to make proteins e. to replenish amino acids

What types of organisms were first placed in the kingdom protista

During a football game an offensive lineman is hit in the legs from the side. upon examination by the physical trainer it was determined that the player has a dislocated knee. there was a significant amount of damage to the entire knee joint.

In your own words, explain how changes in solar activity affected global climate in the past.

Missy spencer was given penicillin for tonsillitis. she developed a severe life-threatening allergic (hypersensitivity) reaction to the penicillin. her medical file records this reaction as a (n) :

When do solar eclipses occur?

What occurs when carbon is returned to the atmosphere from the burning of what

1. what moon phase occurs when the moon is between the sun and earth? 2. what moon phase occurs when the earth is between the sun and moon

Which factors contribute to changing igneous and sedimentary rocks into metaphoric rocks? Select all that apply. Weathering Erosion Heat Deposition Pressure

How many and what type of chromosomes would be expected in a karyotype of a human male? 22 pairs of autosomal chromosomes and 2 Y chromosomes. 23 pairs of autosomal chromosomes and 2 Y chromosomes.