What negative affects do humans have on the earths oceans

Is paper biotic or abiotic

Which nutrient is required for nearly every chemical reaction in every cell in your body?

What significance is crossing over for evolution of a species?

When iron reacts with oxygen, it forms iron oxide, or rust. 4 Fe + 3 O2 2 Fe2O3 If 112 g of iron (Fe) combines with 24 g of oxygen (O2), how much iron oxide is formed? A. 24 g Fe2O3 B. 136 g Fe2O3 C. 112 g Fe2O3 D. 88 g Fe2O3

What is the phenotype of a plant with the genotype RR

Undigested food is pushed out the body through the ___. rectum small intestine esophagus gallbladder

Valence electrons are important because A) They form chemical bonds with other atoms B) They tell which period the element is in C) They take isotopes D) They identify the element

Why is the nucleus similar to the nervous system

An experiment which seems to validate a hypothesis: must be correct should be repeatable by other scientists is all that is required to draw a conclusion

What is the colorless fluid surrounding the grana within the chloroplast.