1)
scientific theory. all but one of the statements below describes some aspect of a scientific theory.
a) once developed, a theory cannot be changed.
b) many observations and much evidence is needed to develop a theory.
c) a theory reflects an understanding of a particular part of the natural world.
d) scientists use the scientific method and controlled experiments to collect evidence to develop a theory.
2)
hypothesis. theory. law. what statements below best apply to a scientific theory. all but one statement could apply.
a) continued observation and research can challenge existing theories.
b) to develop theories, scientists most often rely on an accumulation of knowledge developed over time.
c) a scientific theory is an expression of a mathematical or descriptive relationship observed in nature.
d) a scientific theory may begin with observations and is then substantiated by experimentation and data collection.

1. A. Once developed, a theory cannot be changed.

2. C. A scientific theory is an expression of a mathematical or descriptive

Explanation:

1. Scientific theories can change or develop over time. Because of the development of new technology, scientists are able to explore and discover things which were not possible till now. With new discoveries, some theories are changed, refuted, and/or supported by new evidence.

2. An expression of a mathematical or descriptive relationship observed in nature is actually a scientific law and not a theory. A scientific theory is an explanation of a natural phenomenon while a scienific law is a statement about an observed natural phenomenon and it does not delve into why it occurs.

there are mainly three domains in biological classification namely; archaea, bacteria, and eukarya.

archaea includes all the prokaryotic cells which are characterized by their lipid membranes. they have branched hydrocarbon which is attached to glycerol through an ether linkage.

bacteria includes all the prokaryotic cells, the cell membrane of which are made up of the unbranched fatty acid chain. in addition, they are attached to glycerol through an ester bond.

eukarya includes all the eukaryotic cells, that is, the cells contain a nucleus and other membrane-bound cell organelles.

they can be autotrophic as well as heterotrophic, unicellular as well as multicellular

they include kingdoms like protista, plantae, animalia, fungi et cetera.

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explanation: