Which of the following us an example of an open system?

An aquarium with both pants and animals

An enzyme found in deep ocean organisms that allows them to grow

A living single celled organism like phytoplankton

A river that has been dammed

When Jane visits a beach, she notices a sea stack has formed offshore. Which of the following best describes what caused the sea stack to form? Erosion hollowed out the rock in a seaside cliff.

What is the best evidence telling you whether this cell is diploid or haploid?

Alicia quickly pulled back her hand just as she touched the hot curling iron on the dresser. which neuron is responsible for carrying the message from the muscles in alicia's hand to her spinal cord, allowing her to yank her hand away from the hot

Autotroph is to producer as heterotroph is to a. herbivore b. consumer c. decomposed d. carnivore

Which would a student expect to find when examining a dicot a. one cotyledon b. flower parts in multiples of threes c. stems with bundles of vascular tissue arranged in a ring d. leaves with parallel veins

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.