When an ecosystem is balanced, the population sizes of the different species do not change relative to one another. true or false.?

Well preserved fossils of whales and other organisms have been found in the southern parts in Mississippi what could be a reason for this

When the memory cells of the immune system are not activated or responding to a pathogen exposure?

What would happen if the gene for colored spots was not passed from a moth to its offspring

Describe the potential risks from exposure to trace amounts of hormone mimics such as bisphenol.

The heritability of intelligence is highest among select one: a. genetically similar individuals who have been raised in similar environments. b. genetically different individuals who have been raised in similar environments. c.

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.