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slamgirl [31]
2 years ago
7

PLEASE HELP I WILL GIVE 50 POINTS!!!!! (btw its science not biology)

Biology
2 answers:
Elena L [17]2 years ago
4 0

Answer:

B. Catastrophism

Explanation:

Catastrophism is the theory that states that the Earth was mostly shaped by very sudden effects. These sudden and short-lived events would occur worldwide in scope and change the Earth rapidly. This is in contrast to uniformitarianism that states that slow incremental changes made the Earth like it is today. Changes like erosion.

seropon [69]2 years ago
4 0

Answer:

The answer is B

Explanation:

I took the quiz

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After crossing over as shown below what would the sequence of genes be for each of the chromatids
SashulF [63]

The sequence of the genes will be ABCD, abCD and abCd, abcD.

Full question is attatched below.

<h3><u>Explanation:</u></h3>

The genes in the chromosomes are denoted as the sequence of genes present in a single chromatid of a particular chromosome. Thus, the genes here in this question are to be mentioned as ABCD and not as abab.

Crossing over is the process by which the homologous pair of chromosomes do pair up in the Prophase 1 of meiosis 1 division and they exchange a particular part of their DNA with each other. This leads to exchange of genes between the homologous chromosomes, which will form different gametes in near future. This brings about a variation between the offsprings of same individuals.

Here the d gene of the two chromosomes are getting exchanged.

So the chromosomes will become ABCD, abCD and abCd, abcD respectively.

8 0
3 years ago
Describe two problems of the<br> reproductive system.
patriot [66]
Infertility – the inability to achieve a pregnancy in a fertile woman due to low sperm production, blockages or other factors.

Prostate disease – benign prostate enlargement and prostate cancer. STIs – bacteria or viruses acquired through sexual contact.
6 0
3 years ago
A solution with a pH of 9 has ____ times fewer hydrogen ions than a solution with a pH of 6.
tino4ka555 [31]

Answer: Has 3 times fewer hydrogen

Explanation:

3 0
3 years ago
Megan wants to see if mice that are fed food A or B grow at a faster rate. She measures the mass of the mice on day 1,
Rama09 [41]

Answer:

<u>No, there is no control group.</u>

Explanation:

To test various theories, experiments are usually conducted under a number of different conditions. Several considerations must be established when planning studies to ensure reproducibility, accuracy, and validity of findings.

For example, while controls are kept constant, or unmanipulated. Also, separate independent variables are strictly altered and analyzed - this guarantees validity and may show whether external influences affected the experiment. Here the variable being altered or measured is the food, and the resultant weight is the factor being observed.

8 0
2 years ago
ASAP!!!!!!!!!!
docker41 [41]

Answer:

Plato Answer

Explanation:

Embryonic stem cells are plentiful, and they can create every cell in the human body. Researchers can use these cells to create tissues. They can possibly grow new organs in a lab to treat diseased organs. Adult stem cells are rarer in the human body, and they’re limited in the types of cells they can make.

An embryo can’t grow without its stem cells, so people have ethical concerns about their use. Adults can provide consent to donate their stem cells, so there are fewer ethical issues regarding the use of adult stem cells.

6 0
3 years ago
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