The image shows one stage in human development Which stage of development is pictured
Fertilization
Blastocyst development.
Cell differentiation
Embryonic growth

Fertilization

the "power" of a lens is its resolution power, or its ability to distinguish between to closely located points. with the low power lens, it is likely you will see the rough form of the hay and maybe some movement of dots around the hay. however, when observed with the high power lens, the detailed features of the hay become visible and the microbes being grown are more clearly visible.

i hope this you

d. planting trees

the trees take in carbon to make oxygen.