The right answer is a. Eras
A geological era corresponds to the second largest unit of time on the geological time scale behind the eon.
* The history of the Earth is divided into ten eras:
Eoarchéen: -4.0 to -3.6 billion years;
Paleoarchean: from -3.6 to -3.2 billion years;
Mesoarchean: from -3.2 to -2.8 billion years;
Neoarcheen: -2.8 to -2.5 billion years;
Paleoproterozoic: -2.5 to -1.6 billion years;
Mesoproterozoic: -1.6 to -1 billion years;
Neoproterozoic: from -1 to -0.541 billion years;
Paleozoic: from -541 to -252 million years ago;
Mesozoic: from -252 to -66 million years;
Cenozoic: from -66 million years to the present day.
Answer:
The cells would not be able to produce energy.
Explanation:
There are aerobic cells in the human body such as nerve cells, which is a process where oxygen is used to produce ATP in much greater amounts.
They go through a process named "oxidative phosphorylation" which is where the electron transfer happens taken from the NADH and down to FADH2 and lastly to the oxygen molecules to produce ATP.
If these cells have their oxygen cut out, then oxidative phosphorylation can not proceed which blocks the formation of ATP, leaving the cells without energy to operate.
I hope this answer helps.
Mendel studied several different traits of a pea plant. For example, some pea plants have purple flowers and others have white flowers. Pea plants can either self-fertilize or cross-fertilize. Crossing two plants is called hybridization. To start, however, Mendel needed plants that were true-breeding. This means that after generations of self-breeding, the pea plant expressed only one version of the trait. After many generations a purple flowered plant only produced plant never produced a white flowered plant.
Answer: I believe the answer is c.
Explanation:
I really hope it's right.