Robert Hooke observed the cells through a combination of lenses.
After Robert Hooke, the development of microscopy take place. After the development of the microscopy, scientist were able to observe the features of the cell. In order to formulate a cell theory observation of most of the cells was necessary. So, it was necessary to observe different types of cells from different organism. So, the advancement of the microscopy and observation process required for the formulation of the cell theory was the reason for the delayed development of the cell theory.
Teratology. This is a field within embryology (study of development of embryo and fetuses) that studies the effect of congenital abnormalities on the developing embryo and also teratogens ( substances that affect the normal development of embryo/fetus)
Answer:
Option (1).
Explanation:
Saturated fatty acid may be defined as the fatty acid with the single bonds between the carbon atoms. The unsaturated fatty acid consist of double and triple bond in its structure.
The melting points differs between the saturated and unsaturated fatty acid. The saturated and unsaturated fatty acids have high difference in their melting point and this difference may changes as the double and triple bonds are increased or decreased in the fatty acid structure.
Thus, the correct answer is option (1).
ec·o·sys·temDictionary result for ecosystem
/ˈēkōˌsistəm/Submit
nounECOLOGY
a biological community of interacting organisms and their physical environment.
(in general use) a complex network or interconnected system.
