Answer:
A malaria outbreak causing allele frequencies to change is an example of <u><em>natural selection.</em></u>
Explanation:
Natural selection is a type of selection in which those organisms are favoured to live and reproduce which are better adapted to live in an environment. Due to natural selection, the allele frequencies of a population will tend to change with the passage of time.
When the outbreak of malaria occurs, those organisms which do not catch malaria are able to survive and pass on their characteristics to their offsprings. the other organisms die and do not reproduce. This will cause changes in the allele frequencies.
A bill can have a second chance after a veto.
If the president vetoes the bill, the Congress can over-ride the bill with a 2/3 vote of both houses (house and senate)...and with that, the bill becomes a law.
Answer:
Cell Wall and large central vacuole
Explanation:
All cells have a cytoskeleton and cell membrane, but cell walls and large central vacuoles are unique to plants. Cell walls give plants their rigid structure and the ability to withstand great force, while large central vacuoles provide a way for plants to store excess reacts or products derived from photosynthesis.
Answer:
The theories are grouped into four major theory types: (1) psychometric theories; (2) cognitive theories; (3) cognitive-contextual theories; and (4) biological theories.
<span>Osteoclasts
</span><span>Are derived from stem cells that produce macrophages
Secrete acids and protein-digesting enzymes</span>
