Relacionar con una frase los siguientes pares de conceptos: a) vía lenta - núcleo celular b) señal - receptor c) primer mensajero – segundo mensajero d) receptor enzimático – enzima

desert perennials often survive by remaining dormant during dry periods of the year, then springing to life when water becomes available. most annual desert plants germinate only after heavy seasonal rain, then complete their reproductive cycle very quickly.

answer: accepted answer: aquatic animals use the oxygen dissolved in water to carry out respiration. since the amount of dissolved oxygen in water is low as compared to the amount of oxygen in the air, therefore the rate of breathing in aquatic animals is much faster than it is in terrestrial animals.

explanation:

instead of copying and pasting things off of tests or work done on computer which im sure you did, try and read over the question carefully