A: The observed results are different from the expected results.
It's often impossible to repeat trials on the same subjects. 2-Subjects may report an inaccurate medical history. 3-It can be difficult to control all possible variables. 4-It's impossible to come up with testable scientific questions for human subjects.
The statement 'the temperature increases with an increase in atmospheric carbon dioxide' describes the relationship between carbon dioxide and temperature.
<h3>What is global warming?</h3>
Global warming is a climate phenomenon by which the temperature is increasing due to the release of greenhouse gases.
These greenhouse gases are mostly generated by human activities (e.g., industrial activities).
It has been shown that an increase in the emission of greenhouse gases is associated with global warming.
Learn more about global warming here:
brainly.com/question/3553382
That would be known as the heart.
Answer:
D
Explanation:
During metaphase of cell division, the chromosomes line up in the metaphase plate and the spindle fibers from the poles extend and attach to the centromeres of the chromosomes. The spindle then contracts and pull different chromosomes to the opposite poles of the cell before the parent cell divides. If spindle fibers do not form, then the chromosomes will not separate during anaphase.
Therefore, the final cell after mitosis will be a cell with double the number of chromosomes -because if you remember, during interphase, genetic material is replicated so each daughter cell can have its copy-. Due to quality control in the process of cell divisison, this cell will mostly undergo apoptosis, otherwise, it could develop into cancer.
