b. An unstable ecological niche leads to various selection pressures, which in turn causes the species to remain in a stage of stasis.
c. A stable ecological niche leads to various selection pressures, which in turn causes species to remain unmodified or in stasis.
Answer:
A.
A stable ecological niche leads to absence of selection pressure, which in turn causes species to remain unmodified or in stasis.
Explanation:
a. a protostar
b. a black hole
c. a neutron star
d. a white dwarf star
False
2)The marine flatworms (polycladids) are the smallest of the free-living flatworms, sometimes reaching lengths of 15 centimeters.
True
False
3)Bilateria is a classification within Animalia, and are characterized by animals which are bilaterally symmetrical (with a left and a right side to their bodies).
True
False
Answer:
The part of a flower stalk where the parts of the flower are attached.
Explanation:
Also known as stem
Their cells are all alike.
B.
They can live in extreme environments.
C.
They have different cells for different tasks.
D.
They are able to move around freely.