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photoshop1234 [79]
3 years ago
9

One weakness of the fossil record is

Biology
1 answer:
kherson [118]3 years ago
8 0
It can be C or D but I think the answer is D
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Which factor is a major cause of the changes that
slamgirl [31]

The changes that occur during puberty are mostly a result of changes in hormone levels in the body.

<h3>Puberty</h3>

The transition from a child to an adult is caused by changes in the level of some hormones in the body.

In females, there is an increase in follicle-stimulating hormones as well as luteinizing hormones, leading to an increase in the production of progesterone.

In males, there is an increase in the production of testosterone hormone among many other hormones.

Both progesterone and testosterone are responsible for the development of physical features in females and males respectively.

More on puberty can be found here: brainly.com/question/9410140

3 0
2 years ago
Plz help I need this done by Monday​
kirza4 [7]
C - sex cells i guess
8 0
3 years ago
Read 2 more answers
What metal is is usually used for wires in electric circuits
zavuch27 [327]

Answer:

Typically, Copper is used for wires in electric circuits.

3 0
3 years ago
A research group involved with advertising is conducting a study to investigate whether shoppers are more likely to engage in im
Helga [31]

Answer:

Conduct an experiment.

Explanation:

Any scientific hypothesis or theory requires the proper step and the procedure to explain the particular points about the theory. Any statement made in the science needs the experimental proof.

The scientific experiments includes the different steps used for the validation of any hypothesis. The experiments can explain the main cause of any phenomena and the factors that might affect the experiments. The experimental studies are performed by the scientists.

Thus, the correct answer is option (e).

8 0
3 years ago
The net energy yield from this pathway, where glucose is broken down through several steps forming pyruvate, is ________ molecul
stepan [7]

Answer:

2 molecules of ATP and 2 molecules of NADH

Explanation:

Glycolysis is the first step of cellular respiration (break down of glucose to extract energy) which occurs in the cytoplasm. Glycolysis is a pathway common to all living organisms- prokaryotes and eukaryotes, as it does not require oxygen to occur.

Glycolysis occurs in two major phases (ten steps) requiring 10 enzymes catalyzing each step; the energy-requiring phase and the energy-requiring phase.

In the energy-requiring phase, the starting molecule (glucose) gets rearranged in a series of chemical reactions, and two phosphate groups gets attached to it producing fructose-1,6-bisphosphate which is unstable, This modified sugar then splits in half due to its instability to form two different but inter-convertible phosphate-bearing three-carbon sugars (Dihydroxyacetonephosphate, DHAP and Glyceraldehyde-3-phosphate, G3P). Because the phosphates used in these steps come from 2 ATP molecules, 2 ATP molecules get used up in this phase

All the DHAP molecules get converted to G-3-P in order to enter the next phase.

In the energy-recovering phase, the 3-carbon sugar (G3P) is converted into another three-carbon molecule called pyruvate, through a series of reactions. In these reactions, two ATP and 1 NADH molecules are made. This recovery phase occurs twice (one for each of the two isomeric three-carbon sugars, DHAP and G3P). Hence, a total of 4 ATP and 2 NADH molecules are produced in this phase.

Overall, Glycolysis converts one glucose (six-carbon) molecule to two pyruvate (three-carbon) molecules and a net release of 2 ATP molecules (4 overall - 2 used) and 2 NADH molecules.

3 0
3 years ago
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