Evidence of a chemical change include a. change in size b. change in color c. change in shape d. change in weight/mass which of these would indicate a chemical change has occurred? a. salt dissolves in water b. a child colors a picture with a crayon c. solid iron is heated until it turns into a liquid d. a metal is added to an acid and hydrogen gas is formed

Which of the following are the functions of the integumentary system? yadda-yadda, the 1st answer is the brainliest. : )

Refer to this portion of a dichotomous key for fish identification to answer the question. 1. (a) has a single dorsal fin ® 5 (b) has a double dorsal fin ® 2 2. (a) one fin is spiny, the other is smooth ® 3 (b) one fin is not spiny or smooth ® 4 5. (a) has small fin on back near tail ® 6 (b) has no fin on back near tail ® 7 6. (a) has barbs near the mouth ® catfish (b) does not have barbs near the mouth ® 10 7. (a) tail is asymmetrical ® 8 (b) tail is symmetrical ® 9 10. (a) scales are small ® trout (b) scales are large ® whitefish what is the next step to complete to identify a fish that has a single dorsal fin, no fin on the back near the tail, and no barbs near the mouth? step 2 step 5 step 7 step 10

Which of the following describes the difference in stimuli required to detect a difference between the stimuli? a. just noticeableb. signal detectionc. subliminald. top down