At each level of the food chain, what happens to about 90% of the energy? A) gained as energy B) lost as heat C) converted into unusable compounds D) excreted as waste

human blood consists of blood A, B, and o. However, there is one more blood group, AB, which contains alleles A and B in the same genotype. What is this phenomenon called?

Express the following number in scientific notation. 0.53000

What is the second macronutrient that is burned in the body?

A mutation occurs in a sequence of DNA. How could the DNA mutation affect the protein produced? A. The chromosomes in the protein could be changed. B. The structure of the protein could be changed. C.

Explain why the concept of gene pools applies to populations but not to species

Why can the same earthquake have different ratings on the Richter Scale and the Moment Magnitude Scale?

Which of the statements best describes the process of crossing over during meiosis? Haploid daughter cells trade chromosomes in pairs. Homologous chromosomes pair up and exchange segments of DNA.

A marine clam is mistakenly added to a freshwater aquarium. What will happen to the clam and why? Popcorn sold at movie theaters is very salty, causing people to become thirsty and to buy so drinks. Explain why salty popcorn causes this thirst.

What is the function of reproductive system?

A diploid cell with 2n = 20 chromosomes goes through meiosis. how many chromosomes will each of the daughter cells have?