Answer:
espero que esto ayude :D
Explanation:
El corazón es el órgano clave del aparato circulatorio. La principal función de esta bomba muscular hueca es bombear sangre a todo el cuerpo.
Answer: The answer should be A: Precipitation.
Explanation: When we take a look at this question, it mentions that there is dew, fog, and clouds on the planet. Infiltration would have probably been evaporated from the ground and became a cloud. The dew and fog would be the condensation. The astronomers notice that there is never any rainfall, and precipitation in the water cycle is rainfall. So therefore, the missing part of the water cycle would be precipitation
Answer: A COMMUNITY
Explanation:
A biotic community, also known as a biota or ’biocoenosis’, is the group of ORGANISMS of two or more different species that live together and interact with each other within an environment or habitat. Together, the biotic community and the physical landscape or abiotic factors make up an ECOSYSTEM.
A group of organisms constitute POPULATION. But when several populations share a common habitat and its resources, they interact among themselves and develop into a biotic community or simply, a community.
Answer:
A. depend on a concentration gradient
Explanation:
Simple and facilitated diffusion are the two methods of transport of substances down their concentration gradient. In both processes, substances are moved from the region of their higher concentration to that of their lower concentration. Since simple diffusion and facilitated diffusion are passive processes, there is no requirement of energy input to drive them. Both are driven by the concentration gradient of the substances only.
