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scoray [572]
3 years ago
12

Statistically, which adolescent is most apt to experience menarche first?

Biology
1 answer:
galina1969 [7]3 years ago
4 0
<span>Statistically, which adolescent is most apt to experience menarche first? The </span> Answer  Is ( C) 
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How old do birds have to be to reproduce ?
Katena32 [7]
Birds reproduce sexually by mating and then depositing shelled eggs, which they incubate, hatch and rear. Birds produce sperm and egg cells just as mammals do, but most male birds lack a copulatory organ. Instead, birds mate through a process known as a “cloacal kiss.”
8 0
3 years ago
The embryos of all animals undergo gastrulation, a dramatic reorganization of cells critical to formation of the animal body.
Ksju [112]

Answer: gastrula, archenteron, blastospore

Explanation:

a) Gastrulation is a dramatic reorganization of the hollow blastula into a two-layered or three-layered embryo called a gastrula.

b) Invagination of cells into the blastocoel forms a tube called the archenteron.

c) The open end of the archenteron is called the blastospore..

5 0
3 years ago
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Which is the best hypothesis for why the white colored moth population decreased
dolphi86 [110]
Black moths were more fit to survive to the environement, since many animals couldnt see them.
3 0
4 years ago
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Quoi fait alveoles pulmonaire
Natasha_Volkova [10]

Answer:

Les alvéoles pulmonaires sont situées au plus profond des poumons, aux extrémités des bronchioles, et sont la structure de base où se réalisent les échanges gazeux entre l'organisme et l'air extérieur.

7 0
3 years ago
Texto donde se desarrolle la definicion de seleccion natural. Además, empleem los siguientes terminos: Variabilidad, mecanismo s
SOVA2 [1]

Answer:

la selección natural es el mecanismo principal por el cual la evolución ocurre

Explanation:

Charles Darwin fue un naturalista inglés que propuso la teoría de la evolución o 'descendencia con modificación' mediante el mecanismo de selección natural. Acorde a esta teoría, la selección natural se define como el mecanismo selectivo de reproducción diferencial de los individuos mejor adaptados a su ambiente. La variabilidad es el la materia prima sobre la cual la selección natural actúa, seleccionado aquellos individuos que presentan combinaciones fenotípicas y genotípicas más adaptadas para sobrevivir en un ambiente en particular. Los individuos de una población que son 'superiores adaptativamente' poseen más chances de sobrevivir y reproducirse, y por lo tanto tienen también más probabilidades de transmitir sus genes a la siguiente generación.

8 0
3 years ago
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