When a stimulus reaches the thresholdin the plasma membrane open. Sodium bannel

led ne channel

Potassium channel

Calsam channel

Answer and I will give you brainiliest
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Which of the following is a way that minerals are used? a. industry construction technology d. all of the above

This is the process of making a prediction based on the results of prior observations of similar events.

Parthenogenesis is a type of reproduction that does not require a mate. it’s rarely seen in birds and higher vertebrates. parthenogenesis involves the formation of a zygote. but this zygote is formed without fertilization. in parthenogenesis, in the absence of a male gamete, the ovum develops directly in the zygote.