Hola! tengo una pregunta ¿todos los animales invertebrados tienen un solo orificio por el que ingresa el alimento y salen los desechos? Necesito la respuesta rapido

Most animal cell membranes have proteins that pump. ions out of the cell and potassium ions into this

How does food concentration affect yeast activity

Which of the following observation darwin shape his concept of descent with modification? a) species diversity declines farther from the equator. b) fewer species live on islands than on the nearest continents. c) birds live on islands located farther from the mainland than the bird's maximum nonstop flight distance. d) south american temperate plants are more similar to the tropical plants of south america than to the temperate plants of europe. e) earthquakes reshape life by causing mass extinctions.