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zepelin [54]
3 years ago
13

When salt is dissolved in fresh water, the density of the water ______ because the mass of the water increases.

Biology
2 answers:
Slav-nsk [51]3 years ago
8 0

Answer: b- increases

Explanation:

Sholpan [36]3 years ago
7 0

Answer:increases

Explanation:

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Gregory wanted to know what type of food spiders prefer to eat, so he performed two different investigations.
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C. Both investigations have benefits and limitations and should be examined together to get the most reliable result

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When a hot surface is touched, receptors in the hand send a signal to the nervous system. The nervous system then sends a signal
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a behavioral response requires coordination and communication between different parts of the body.

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3 years ago
Please help with this. It's due today.
rosijanka [135]

Answer: 2, 3, 4, 1

Explanation:

6 0
2 years ago
Both Duchenne muscular dystrophy and color blindness are caused by recessive alleles. DMD, unlike color blindness, nearly always
Ronch [10]

Answer: Although both are X-linked recessive conditions, and therefore more likely in males, with the single X-chromosome. The recessive allele in colour blindness occurs at a higher frequency in the population and is a mild condition. Thus colour blindness does occur to a lesser extent in females because it needs the double recessive condition. DMD is a severe, disabling condition with a limited lifespan, and recessive allele frequency much lower, so the double recessive condition in females is very rare.

Explanation: DMD is an X-linked recessive, “nearly always in males” suggest that it also occurs due to a new mutation or some rare condition e.g. double recessive from an affected father and carrier mother, or inactivation of the normal gene in a heterozygote. It is also found that the defective allele is not completely recessive and that female carriers may exhibit mild to moderate effects.

colour blindness is polygenic, although the genes are all X-linked. It is more common in males than females. Females can carry two recessive alleles and so express the phenotype, but this is uncommon because the frequency of the recessive gene is low.

There are similarities in that both are X-linked recessives, therefore commonly expressed in males, who only have one X chromosome. The gene frequency of the colour blindness recessive is much higher than that of DMD, so the double recessive condition, which affects females, is more likely to be seen with colour blindness. In addition, DMD is a severe condition associated with disability and limited lifespan, which reduces the probability of mating between an affected male and carrier female

6 0
2 years ago
Eggs are developed and released by the<br> Sperm is produced by the
lana66690 [7]

Answer:

Eggs are developed and released by the <em>ovaries.</em>

Sperm is produced by the <em>testes</em>.

Explanation:

Ovaries are the site in females where the production of egg takes place. After the formation of an egg, the egg is transported to the fallopian tube, where it might undergo fertilization if a sperm unites with it.

Sperms are the male reproductive cells which are produced by many animals. The sperms are produced in the testes of males.

The sperm and the egg unite to form a fertilized zygote.

7 0
2 years ago
Read 2 more answers
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