In an embryo, the tissues that receive a nerve produce sprouting
factor, which encourages nerv...
In an embryo, the tissues that receive a nerve produce sprouting
factor, which encourages nerves to grow and branch, while
the nerve produces anti-sprouting factor, which inhibits nerve
growth. this is an example of a. a positive feedback system
b. a negative feedback system c. thermoregulation
d. homeostasis.
Answers: 2
Biology, 22.06.2019 09:10, ballin4534
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
Answers: 2
Biology, 22.06.2019 13:00, Brittpaulina
Facilitated diffusion move large molecules and/or polar molecules across the cell membrane. what does facilitated diffusion use to do this?
Answers: 3
Biology, 22.06.2019 13:50, allieballey0727
The serengeti plains are part of the african savanna ecosystem and are home to a variety of different species of plants and animals. the serengeti plains experience a seven-month period of seasonal drought each year, during which the ecosystem receives only four inches of rain and the availability of some resources becomes very scarce. which type of limiting factors does the seasonal drought in the serengeti plains affect?
Answers: 2
Social Studies, 19.08.2019 00:30
Mathematics, 19.08.2019 00:30
English, 19.08.2019 00:30
Physics, 19.08.2019 00:30
History, 19.08.2019 00:30
English, 19.08.2019 00:30