C- all of the solid, rocky parts of the earth
Answer:
It is well-supported by evidence
Explanation:
Answer:
Las unidades de Mendel se conocen ahora como GENES
Explanation:
Durante sus experimentos, Mendel demostró que las características de las plantas de guisante (por ejemplo color de la flor, color de la semilla, forma de la semilla, altura de la planta, etcétera) eran heredadas, y denominó "elementos" a las unidades portadoras de dichas características. Es decir que cada elemento o unidad discreta, era el responsable de que la planta exprese una u otra característica. Estableció que estos elementos se redistribuían independientemente uno de otro, generación tras generación. Con el paso del tiempo y el avance de las investigaciones, estas unidades o elementos fueron denominados <em>Genes</em>.
Answer:
time between eras and biodiversity that exists on each period of the geological time
Explanation:
A geological era is a formal geochronological unit of the geological time scale that represents the time corresponding to the duration of an era, the equivalent chronostratigraphic unit comprising all the rocks formed at that time. The ages are one of the major divisions of geological time, they are subdivisions of the eons and they are divided into periods.
The three eras of the Phanerozoic eon variables, simplifying much, the three classic divisions of the history of the life of the planet:
1. Paleozoic represents the "age of fish"
2. Mesozoic the "age of reptiles"
3. Cenozoic the "age of mammals."
Traditionally they had been referred to as Primary Age, Secondary Era, Tertiary Era and Quaternary Era (currently the Quaternary is another period of the Cenozoic era). The passage from one era to another is defined by events of global mass extinctions, which entail a significant renewal of the biota of the planet, both marine and terrestrial; thus the passage from the Paleozoic to the Mesozoic is marked by the mass extinction of the Permian-Triassic and the passage from the Mesozoic to the Cenozoic by the mass extinction of the Cretaceous-Tertiary.
Answer:
Evolution in nature by natural selection only modifies the structures present in the ancestors and favors the better adapted structures.
Explanation:
An engineer can design the bones and muscles of the forelimbs of given organisms as per their needs and give rise to new unique structures for each of these organisms.
On the other hand, evolution in nature allows the modification of existing traits by the accumulation of variations. The adaptive variations in the traits are then favored by natural selection. Therefore, forelimbs of mammals such as horses, whales, and bats have evolved by modification of the forelimbs present in their common ancestors.
The limitation of modification of existing structures does not allow the formation of a completely new structure.
