Depending upon the disease, individuals can be contagious during the incubation period, period of illness, and the period of convalescence.

a. True b. False

Before many plants can inhabit a rocky area, soil must be present. A pioneer species must start the process of soil formation for succession to take place.

Which statement is true about the current understanding of the composition of the universe. A) Roughly 70% of the mass of the universe is normal "everyday" matter. B) All energy in the universe is bound up as everyday "normal" matter.

How will this mutation most likely affect the mouse and the population

What causes abscess in breast in a 12 year old?

An unfertilized egg of a rabbit contains 22 chromosomes. how many chromosomes are in the somatic (body) cells of a rabbit?

Look at the word equation below. fatty acids → triglyceride water which describes the chemical reaction taking place? a. hydrolysis of fatty acids b. dehydration of triglycerides c. hydrolysis of triglycerides d. dehydration of fatty acids

Which sentence correctly uses a pronoun in the nominative case as a subject? a. Stefani and me stretch for thirty minutes prior to our vaulting competition. b. Prior to our vaulting competition, Stefani and I stretch for thirty minutes. c.

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.