The scientist credited with being the first person to observe bacteria is

a. robert hooke

b. anton van leeuwenhoek

c. albert einstein

d. isaac newton

Organic soils composed of fine black material of sticky consistency formed in former glacial lakebeds are called:

Which type of species are generally able to have a greater carrying capacity in an ecosystem because of the fact they occupy a broad niche?

StOp IgNoRiNg My QuEsTiOnS Transcription is: The synthesis of proteins from information on a mRNA The synthesis of brain cells by neurokinetic means The synthesis of nucleotides from a DNA molecule The synthesis of RNA from a DNA template

Researchers condition a flatworm to contract its body to a light by repeatedly pairing the light with electric shock. the stage in which the flatworm's contraction response to light is first established and gradually strengthened is called

A lithium atom has lost an electron comes near a chlorine atom that has gained an electron. what happens?

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.