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grigory [225]
3 years ago
6

Purpose: Does the amount of stirring affect the rate at which salt dissolves in water?

Biology
1 answer:
Rainbow [258]3 years ago
7 0
Hypothesis: If i increase the amount of string then the salt will dissolve faster
Independent variable: the amount you stir the liquid
Dependent variable: the time it takes to dissolve the salt
Materials: you need a beaker, salt, water, and a stir rod.

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A primigravida is admitted to the birthing unit in early labor. A pelvic examination reveals that her cervix is 100% effaced and
NeTakaya

The fetal occiput is in the Ischial spines.

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

During labor and delivery, the baby passes through the “pelvic bones to reach the vaginal opening”. The pelvis is located between the hip bones and is wide/flat in females. The pelvis has the uterus, cervix and vagina. The muscles in the uterus push the baby down. The baby’s head presses the cervix releasing oxytoxin. Then it dilates and allows the baby to pass through fetal station.

Fetal station is the fetus/baby is in the pelvis. Occiput is the lower part of the head/skull. The presenting part of the baby passes through the birth canal. Most of the time it would be “baby's head, shoulder, the buttocks, or the feet”. Ischial spines are “bone points” on the “mother's pelvis”. It is the “narrowest part of the pelvis”.

<u>0 station:</u> This is the position when baby's head is at the Ischial spines. The baby is "engaged" when largest part of the head enters the pelvis. If the presenting part lies above the Ischial spines, the station is reported as a negative number from -1 to -5.

3 0
3 years ago
In the cross of two heterozygous what percentage of the offspring would be homozygous recessive
boyakko [2]

Answer:

25%

Explanation:

3 0
4 years ago
Identify the biotic factor of an ecosystem from the following:
lions [1.4K]
Trees are examples of biotic factor which includes living things in which the size ranges from minute or small to large, referred to as micoorganism or macroorganism. Abiotic factors on the other hand, are non-living things which are soil, temperature and sunlight, in this case.
6 0
3 years ago
Read 2 more answers
A certain DNA sample is found to have a makeup consisting of 22% thymine. Use Chargaff’s rules to fill in the percentages for
Pavel [41]

Answer:

Adenine= 22%

Guanine= 28%

Cytosine = 28%

Explanation:

According to Chargaff rule, the amount of adenine in a double-stranded DNA is equal to the amount of thymine. This is due to the fact that adenine and thymine bases are complementary and form base pairs.

Likewise, the amount of guanine in a double-stranded DNA is equal to the amount of cytosine since guanine pairs with cytosine.  

Given that percentage of thymine in a DNA sample = 22%

Percentage of adenine = 22%

Total percentage of adenine and thymine = 22+ 22 = 44%

Percentage total of guanine and cytosine bases = 100-44 = 56%

Percentage of guanine base in the DNA = 56 /2 = 28%

Percentage of cytosine base in the DNA = 28%

8 0
4 years ago
Which trend in hominid evolution can be supported by fossil evidence?
Trava [24]
Walking upright.

You can make a case for all of them, but for three of them indirectly.

But the answer, I think, is walking upright.


You can look at the pelvic bones and femur orientation in the hips. You can also look at the way the skull sits on the vertebra.

Chimpanzees have a skull that sits more downward, because they walk on all fours most of the time. While humans have skulls that sit more horizontally on the vertebra, which allows us to see out on the horizon more easily. We can do that because we stand on two feet.

I hope that helps.
5 0
3 years ago
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