What elements are the most common substance in the human body?? A. Oxygen and phosphorus.
B. Carbon and nitrogen.
C. Hydrogen and oxygen.
D. Calcium and nitrogen

Suppose you have monohybrid pea plants in your garden and find that they produce round seed to wrinkled seeds in the ratio of 3: 1. if the allele are designated (r & r) receptively. what is the probable genotypes of the round seeds which produced f 1 ? rr & rr rr only rr & rr rr only rr only

As the pea seeds respire, the level of coloured liquid in the left hand part of the capillary tube rises. by referring to what is happening in the apparatus, explain why the level of liquid changes

What substance is the most acidic. lemon juice. tomato juice. sodium hydroxide. water