Answer:
four
Explanation:
Carbon atoms have four electrons in their outer shell. So, it exhibits tetravalency & thus, a single carbon atom can form a maximum of four (4) bonds with other atoms
Contraction is the answer
Answer:
Entre ellas la más destacada y elaborada es la Hipótesis de la Automedicación que propone que los trastornos por dependencia de drogas son el resultado de la existencia de una alteración biológica
Explanation:
Galapagos species are among those populations whose
members do not interbreed. The reasons that keep them from mating is that they
are separated due to differences in songs and beaks, individuals only recognize
and respond to songs of their own species. Therefore, geographic isolation and different
environments led to changes in traits that affected mating.
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Answer:
Animals need resources to survive.
Explanation:
With a lack of enough resources for various animals, it generates competition for resources and eventually animals will start to starve and die off.
