<span>Opponents of embryonic stem cell research
compare the destruction of an embryo to an abortion. They believe that
the embryo constitutes life because it has the potential to fully
develop into a human being</span>
Gametes and female gametes joining, during fertilization, to produce a zygote and then an embryo. Most plants produce both male and female gametes, while some produce one or the other. Pollen contains the male gametes and is found on the stamen. Ovules contain the female gametes and are found in the pistil.
I'm not exactly sure what that is, bt I believe it could be a black Earwig.
Answer:
New species develop when:
D. Diverging species no longer recognize one another as potential mates.
Explanation:
- The development of two or more new species from ancestral population is known as speciation.
- Speciation can occur when the population divides into groups and each group occupies a different habitat (geographic isolation) or when the members of the same population do not find one another as potential mate and do not interbreed (reproductive isolation mechanism).
- The three types are: Allopatric speciation.
Sympatric speciation.
Parapatric speciation.
- Allopatric speciation occurs when genetic divergence is allowed through geographic isolation.
- Sympatric speciation does not involve geographic isolation but involves reproductive isolation mechanisms.
- In Parapatric speciation, a population enters a new niche or habitat within the range of parent species and then evolution of reproductive isolation mechanism occurs.
This illustrates Newton's third law
of motion which states that for every action, there is an equal and opposite
reaction. The sea scallop moves by shooting jets of water out of its shell. The
water shooting out pushes in one direction and there is an equal and opposite
force that pushes the sea scallop forward.
