Answer:
Body fossils are the remains of the body parts of ancient animals, plants, and other life forms.
Explanation:
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They use direct evidence from rock samples and indirect evidence from seismic waves
Is a heterotroph because he doesn't reproduce food itself
This molecule has 2 strands.
Answer:
El entrecruzamiento cromosómico es un proceso biológico que ocurre durante la meiosis, cuando las parejas de cromosomas homólogos, o del mismo tipo, están alineadas. Durante la meiosis los cromosomas emparejados están alineados en las llamadas placas meióticas, y tienen un mecanismo biológico que los mantiene unidos.