What can be done to improve soil fertility?

A adding fertilizers to the soil

B planting legumes

C leaving crops unplanted for a season

D all of these

Cancer is the product of a mutation that A) causes the uncontrolled growth of cells B) changes the structure of hemoglobin in the blood C) brings about stunted growth and severe pain D) causes a translocation in a pair of chromosomes

Explain why fossil evidence is consisten with the scientific theory of evolution.

Frozen water exists on the lunar surface primarily in which location? why?

Why is it not advisable to sow rice in winter season

Along with an erect structure that enables us to walk on two legs, what is a feature that distinguishes the human skeleton from most other animals? A. exoskeleton B. four-chamber heart C. four limbs D. opposable thumbs

How do the endoplasmic reticulum and Golgi bodies work together

What sturcture protects the genetic material from the rest of the eukaryotic cell?

1. This subatomic particle with the smallest mass ... A. proton B. neutron C. electron 2. The fastest moving particle ... A. proton B. neutron C. electron

On the average, the Neanderthals were physically: a. taller and thinner than modern humans b. much more lightly built than modern humans c. shorter and more muscular than modern humans d. probably weaker than modern humans e.

Sunflower plants have smooth and fleshy stems. Based on these characteristics, which type of plant could it be? A.) Herbaceous B.) Woody C.) Monocot