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Rudik [331]
3 years ago
15

15 POINTS plz help me WILL GIVE BRAINLIEST

Biology
2 answers:
iVinArrow [24]3 years ago
5 0
Umbilical cord and haploid
Anna11 [10]3 years ago
5 0

umbilical coed and halploid

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If there are 2 DNA molecules at the beginning of S phase, how many DNA molecules is there at end of S phase?
Setler [38]

Answer:2 is your answer

8 0
2 years ago
Human caused reductions of biodiversity, include pollution, invasive species, and overexploitation.
Andrew [12]

Answer:

True

Explanation:

Development, together with globalization, drove severe changes at a global level. The natural and original environments suffered from these effects and still are.

Human beings have constantly been altering the natural ecosystems and causing irreparable damages to nature. For many decades, development involved society and technology advance over new areas unpopulated by humans.

<u>Some</u> of the principal human activities responsible for biodiversity loss are

  • the uncontrolled use of unrenewable resources,
  • overexploitation of renewable resources;
  • land destruction for the mining industry, farming and cattle industry, buildings, and other infrastructures;
  • the unplanned advance of cities, and opening of new roads to connect those cities.  

All of them involving

  • deforestation and fragmentation of natural landscapes;
  • water, air, and soil pollution,
  • species loss, and reduction of biodiversity.

With globalization, transport around the world became normal. And when traveling around the world, new species are intentionally or unintentionally transported too. When these species, of animal or vegetable origin, get established in a new area, they overgrow to the point of turning invasive.

Invasive species are uncontrollable and cause severe damage in native endemic species by competing for resources. The whole ecosystem structure changes.

But there are some background glitches in the system that are the principal responsible for all the mentioned activities. Some important aspects are lacking

  • The respect for nature,
  • People´s education at different levels to care and protect wildlife,
  • Interest in keeping ancestral knowledge,
  • Planning and previous environmental impact studies,
  • Policies to control human activities,
  • Caring involved government.

If, as a society, we lack these aspects, the possibilities of changing our impact on nature are far away.  

6 0
3 years ago
a woman with Type A blood is claiming that a man with Type AB blood is the father of her child who is Type B ? show possible cro
Tpy6a [65]

Answer:

Yes possible

Explanation:

If mother is heterozygous A then her alleles are iA and iO while father is AB so crossing the two we get AO, AA, AB and BO. Hence proved

8 0
3 years ago
What two monosaccharides are formed when the lactase enzyme hydrolyzes lactose?
kolezko [41]

Answer: It is Glucose and Galactose

6 0
2 years ago
Can someone explain haploid and diploid to me? Please?
Sergio [31]
A haploid cell is a cell typically with half the number of chromosomes (a sex cell) used for reproduction.

A diploid cell is the opposite, a full set of chromosomes not intended for sexual reproduction but typically used in mitosis. 
3 0
3 years ago
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