Answer:
the cell combines oxygen molecules to provide energy for use in cellular respiration
Question 5:
A scientific theory should not be regarded as reliable (false).
Scientific theories are reliable.
Question 6:
It is best to use a line graph to show change over time.
Sympatric <span>Speciation. ......................................................................</span>
The correct answer is b. The kingdom classification system can change based on the discovery of new information and organisms.
<span>
The kingdom is taxonomic rank, below domain which is divided into smaller groups called phyla. Different kinds of proposed classification changed over time and at the moment the kingdom-level classification of life includes Bacteria, Archea, Protozoa, Chromista, Plantae, Fungi and Animalia.</span>
<span>Single events or several causes working together to produce extinction in a short period is referred to as mass extinction.
Example:
</span>Destruction of forests, mountains, and bodies of water to satisfy human needs result to the imbalance of nature which also give rise to global warming.
<span>Animals and plants have lost their habitats. They lost their means to live. They lost their food sources and they suffer and die because of humans irresponsible acts.</span>
