Ribs
Feature is the present tense. The past tense is featured.
Are is a present tense verb so "whales are mammals." is a present tense sentence.
Diaphragm is present in mammals .
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Casein is a protein present in milk of mammals . Its absence would present problem for milk production in mammals .
A suitable paraphrase for "no teeth for the present" could be "lacking effectiveness at this time." This phrase conveys the idea that something is currently not impactful or lacking the necessary force to bring about change.
All mammals present today are example of tertiary period mammals as we are living in tertiary period .
The word laking is not a word that is commonly used in present day English. It is used as a dialectal term in some places as well as an obsolete word for "to present an offering".Did you mean the word lacking?The word lacking is a verb. It is the present participle of "lack" which means to be without something.
No, not all mammals possess prostates. The prostate gland is found in male mammals, including humans, but is not present in all species.
Cilia are present in most of the mammals like in men. They are present through out the animal kingdom, most probably.
Bats are the only present-day mammals that can fly.
Hair is a natural feature of mammals and has been present in the animal kingdom for millions of years. It cannot be attributed to a single discovery or a specific individual as it has evolved over time through the process of natural selection.