The term that best defines a bacteria that can survive without oxygen is "anaerobic." Anaerobic bacteria do not require oxygen for growth and metabolism.
When we trace evolutionary history we find that the earliest limbs were the fins of fishes, which became sturdier when fish started to colonize the land, and which then adapted to various ecological niches in the form of a bird's wings, a cat's paws, and a dolphin's fins. Evolution is economical in nature, it always seems to prefer to modify an existing structure rather than creating something entirely new. This is quite understandable in terms of natural selection. Existing strucures will appear in various forms because not all individuals of a given species are exactly the same, and the form that best suits some ecological niche is going to be selected. This makes possible gradual change.
Diagram
Cilia are tiny hair-like structures that line the respiratory tract and move in a coordinated manner to sweep mucus and foreign particles out of the airways. They function to protect and clean the respiratory system.
Rocks are not best described as structures; they are more accurately defined as natural solid aggregates composed of one or more minerals or mineraloids. While rocks can exhibit structural features, such as layering or foliation, these characteristics result from geological processes rather than indicating that rocks themselves are structures. Instead, structures typically refer to the arrangement and organization of materials within a rock or geological formations.
Which phrase defines "social context" best?
c.not changeable
On the list of choices that you posted along with your question, there's no phrase that defines a parallelogram well at all.
c.not changeable
no congruent sides
I don’t knog
c.not changeable
no congruent sides
which selection best defines the phrase at bay as it is used in the last sentence in paragrah six answer
a word-for-word excerpt from a text
to leave alone and let be
a parallelogram with four congruent angles