g Which statement is true about endothermy in mammals and birds? Which statement is true about endothermy in mammals and birds? Birds are reptiles and all reptiles are ectothermic. They both inherited this trait from a common ancestor. Endothermy arose independently in these two lineages. Birds are more closely related to mammals than to reptiles.

How many years would it take the atlantic ocean to grow 500 centimeters? show your work.

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

Explain what a zygote is. use the terms egg cell, sperm cell, and fertilization in your explanation.