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SCORPION-xisa [38]
3 years ago
6

What causes scientific knowledge to change over time?

Biology
1 answer:
storchak [24]3 years ago
8 0

Answer:

More Information

Explanation:

New things are found over time, thus changing knowledge.

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The kidneys filter ____ from the blood and form urine.
umka2103 [35]
Waste and extra fluids from the body.
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4 years ago
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Certain types of ________ have a relationship with certain plants where they help convert nitrogen into a usable form.
Viefleur [7K]

Answer:

Answer is C. Bacteria

Certain types of bacteria have a relationship with certain plants where they help convert nitrogen into a usable form.

Explanation:

Nitrogen is abundant in the atmosphere, but plants cannot use it because of the absence of a necessary enzyme, nitrogenase, which converts nitrogen into a usable form.  So they form a symbiotic relationship (mutually-beneficial arrangement) with nitrogen fixing soil bacteria (rhizobia) which perform biological nitrogen fixation. Biological nitrogen fixation is a process in which the symbiotic nitrogen-fixing bacteria coverts atmospheric nitrogen into ammonia and organic derivatives that plants can use to synthesize proteins.  This bacteria form nodules on the roots of plants like legumes in which nitrogen fixation takes place.

Both plants and bacteria benefit from this symbiotic relationship, as the plant obtains ammonia to synthesize proteins from nitrogen in the atmosphere while bacteria obtain carbon compounds from the plant produced through photosynthesis and a secure environment to grow. As the plant roots leave behind some of the usable form of nitrogen in the soil, this process also increase soil fertility.

4 0
4 years ago
Some newborn black babies have light skin pigmentation but it gets dark with time. Can somebody tell me why this is so?
olya-2409 [2.1K]
Because a newborn baby is trying to catch up with its own body after that's done, they form color, eyesight, and etc.
5 0
3 years ago
Suppose a particular species of tulip plant has three alleles for the gene that codes for flower color. The CR allele produces r
finlep [7]

Answers:

a. CRCp x CpCw=2 red =2 purple = 0 white

b. CRCw x CpCw=2 red =1 purple = 1 white

7 0
3 years ago
mary (type o blood) and sam (type b- blood) have a daughter persephone whose blood type is b . mary can receive blood from:
den301095 [7]

Mary can only receive blood from O+ & O- blood group but not from her husband (B-) or daughter (B+).

<h2>Description of Mary's blood group</h2>

Mary's blood group is O+ as her husband is B- and her daughter is B+.So, it can be said that the daughter's positive(+) antigen should come from her mother (Mary).

AS O blood groups lack A and B antigens, it can donate blood to all other groups and cannot receive from all groups as it has A and B antibodies in the serum.

<h3>Universal Donor</h3>
  • Blood donors with type O- (O negative) red blood cells are known as universal donors, because their red blood cells may be used by people of any blood type.
  • Transfusions from O-positive(O+) or O-negative(O-) blood types are the sole options for those with O-positive (O+) blood.

Therefore it can be concluded that Mary's blood group is O+ and she can receive blood from O+ and O- groups only.

Learn more about universal donors here:

brainly.com/question/22944866

#SPJ4

4 0
2 years ago
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