A grizzly bear has a powerful jaw full of strong teeth that are used by the bear to capture and consume its prey. When a bear uses these tools it is an example of which of the following two body systems working together? a) Reproductive and muscular

b) Immune and digestive

c) Muscular and skeletal

d) Digestive and excretory

Which sentence is an example of a strong conclusion to an autobiography? a. i stayed after school three days in a row to practice onstage in the auditorium. b. i knew i would have to practice all week to memorize my dance for the recital. c. after the recital was over, i knew practicing was worth it, and i was looking forward to my next big challenge. d. on opening night, i danced in front of a packed auditorium.

Nucleic acid certain protein cell membranes certain carbohydrates

Cathy hypothesized that corn would not grow in mud. to test this hypothesis, she took corn kernels and placed 5 in mud, 3 in soil, and 2 in water. to her surprise, the kernels in the mud grew faster than the kernels in the soil. what error might have caused these unexpected results? a. wrong hypothesis b. not enough variables c. undefined control d. too many variables