Answer:
the cell membrane is the semi-permeable protective cover that keeps the cell held together. the cytoplasm is semi-fluid within the cell membrane that keeps the cell in shape.
Explanation:
Answer:
The most appropriate answer would be A sperm cell fertilizes an egg cell.
In sexually reproducing organisms including plants, life starts as a single-celled zygote which is formed by the fertilization of sperm and egg.
The zygote then divides through mitotic division to form an embryo.
After fertilization In angiosperms, the ovule matures to form seed and ovary matures to form fruit.
In gymnosperms, zygote develops into a new sporophyte.
Answer: The troposphere.
It contains half of the earths atmosphere. Weather occurs in this layer.
Answer:
a cat's leg, and a human arm are considered homologous structures.
Explanation:
same joints
muscles are in the same places
