How often does an el niño event occur?

a. about every other year

b. every 10 years

c. about every 2 to 3 years

d. about every 3 to 7 years

What are two factors that increase population size and two factors that decrease populations size

What are two distinct divisions of meiosis

What is the example of sexual reproduction a budding the cloning see conjugation and the binary fission

You observe a physician perform a muscle test by having the patient abduct her arm 90 degrees and move the arm forward against resistance. what muscle (or part of a muscle) is the physician testing

Which statement best describes why an organism is less active when temperatures is too high? a) The organism would be less active because it's enzymes are denatured b) The organism's activity is unaffected when temperatures are low because it can

A macromolecul that contains carbon, hydrogen, oxygen, nitrogen which is used by the body for growth and repair

Explain why a mark on a blade of grass will move away from the ground as the grass blade grows

What do enzymes react with? A. the products of chemical reactions B. the active site of the plasma membrane C. proteins in the cytoplasm D. a specific substrate

Isaac watched a movie where a tsunami washed across the coastline. He related the incident to the geology of the ocean he learned at the school. Which geological phenomenon did Isaac relate to? A. plate tectonics B. upwelling C.

How do mutations affect an organism? A. they may cause the development of a disease-causing allele B. they may cause the development of a more beneficial allele C. they, in some cases, may have no noticeable affect D. all of the above