Calcium is few of the main sources for healthy bones, teeth, and muscles.
The answers are A) ectoderm and B) endoderm.
Fertilization is a fusion of male and female gametes which leads to the formation of a zygote. The zygote undergoes mitosis and transforms into a single-layered blastula. Gastrulation is a transformation of the blastula into a two-layer or three-layer gastrula. Cnidarians are a diploblastic animal because their gastrula has only two layers - endoderm and ectoderm.
Answer:
the number of protons, neutron and electron for a neutral atom of nitrogen is p:7E:7N:7
cleaning oil spills, cleaning pollution and generating electricity, metabolising methane into methanol, converting newspaper to biofuel and treating depression to anciety.
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