Short-term sensitization of the gill-withdrawal response in Aplysia Group of answer choices depends on the activation of protein kinase A. depends on presynaptic facilitation. depends on the phosphorylation of K ion channels in the sensory neuron terminal. All answers are correct depends on an increase in Ca influx into the presynaptic sensory neuron terminal.

the dark variety, as they are not visible on the dark tree barks

explanation:

estuaries are the partially enclosed coastal bodies of brackish water formed at the mouth of sea where river meets an ocean. it is a transition zone between river and sea water so estuaries are influenced to both marine environment such as tides, waves and to riverine such as flow of fresh water and sediments. the mixing of sea and fresh water provide high level of nutrients, making estuaries a high product habitats.

many estuaries suffers degradation from a variety of human activities like erosion from deforestation, overgrazing, overfishing, drainage and eutrophication.

so from the above statement answers will be

1. false as estuaries are formed due to both brackish and freshwater.

2.true, due to high productivity estuaries are breeding ground for many marine species.

3. direct and indirect activities of man that contribute to pollution and deposition of sediments.

gag reflex, poor dentition, gum retraction

have a good day