Answer:
Prenatal period.
Explanation:
Two main types of reproduction that exist in living organisms are sexual reproduction and asexual reproduction. The fusion of the male and female gamete leads to the formation of zygote in case of sexual reproduction.
The prenatal period may be defined as the time development required for the fetal to grow in the womb. The prenatal period starts from the conception and remains till the birth of the child. Three main stages of prenatal period are germinal stage, embryonic stage and fetal stage.
Thus, the answer is prenatal period.
Answer:
air resistance or drag, (Option B)
Explanation:
1: D
2: B
3: B
4: C
5: D
8: A
9: D
10: A
Answer:Algae contributes to the phosphorus cycle
Explanation:Algae are organisms which have distinct chlorophyll and are autotrophic in nature .Most of them live in water.Algae include the Unicellular chlamydomanas and the multicellular sea weed.some algae are colonial and some are filamentuous.Algae possess chlorophyll, carotenoids and phycobillins as pigments.
Algae are important primary producers in the water bodies and produces a significant portion of oxygen.
Some algae eg diatoms are fossilized due to their glass cell wall and are known as diatomaceous earth, which has various uses such as abrasives,tooth paste and as filters.
Red algae produces calcium carbonate which forms coral reefs.
The products of some algae are used as solid gels and source of agar for microorganism culture.
Answer:
#IN GIRLS
* adolsence
* menstruation
#IN BOYS
* penis strts turning big
*beard starts coming of face
