Answer:
Aquatic
Explanation:
In aquatic environments, most of the upper and inferior eukaryons have external reproduction systems, for example, egg lying or free disposal of sperm. This is a common feature on fishes, mollusks, crustaceans, sea-worms, sponges and other lower forms.
It does not count for mammals, having these latest internal systems of reproduction.
All the other environment named, are terrestrial. Where the most majority of the living being had evolved to use internal fecundation.
Answer:
Explanation:
L’entorn empresarial intern està format per factors de l’empresa que afecten l’èxit i l’enfocament de les operacions. A diferència de l’entorn extern, l’empresa té el control d’aquests factors. És important reconèixer les oportunitats i amenaces potencials fora de les operacions de l’empresa.
Answer:
choanoflagellates and sponges are sister groups
Explanation:
The choanoflagellates are small unicellular organisms belonging to the Protista kingdom. These microorganisms are collared flagellates morphologically similar to the choanocyte cells of animal sponges, which have a central flagellum surrounded by a collar of microvilli. In consequence, it has been suggested that choanoflagellates may represent the closest living relatives of primitive metazoans (i.e., they are sister groups to sponges). This hypothesis has recently been supported by both molecular phylogenetic and comparative genomic analyses.
Answer:
I think it is A. Antibodies
Please tell me if I am wrong
