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stiv31 [10]
3 years ago
7

Which one do you simp for?

Biology
2 answers:
Eduardwww [97]3 years ago
7 0
1 for sure that’s what I say
Setler [38]3 years ago
4 0

3 I hope this helps and it right

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When does the WHO declare a pandemic influenza?
likoan [24]

Answer:

Three influenza pandemics occurred during the 20th century: the 1918-19 “Spanish flu,” the 1957-58 “Asian flu,” and the 1968-69 pandemic or “Hong Kong flu.” In 2009, the World Health Organization (WHO) declared a global pandemic of H1N1 flu.

Explanation:

Hope this helps! :>

6 0
2 years ago
What do all living things need to be living.
Lesechka [4]
Sunlight ( the source of energy), air (composed mainly of oxygen and carbon dioxide), water, food (nutrients), temperature (a habitat with a right temperature for different kind of organisms). 
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3 years ago
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If you find a rock that is 1.25 billion years old, what should be the ratio of the daughter to parent?
marishachu [46]
The potassium 40 to calcium or argon 40 half-life is 1.25 billion years so if this half-life is displayed then the age of 1.25 billion years would be valid. Half life is the time it takes for an isotope to decay into half its' amount and which in the process is losing its radioactivity. 
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4 years ago
Explain how fossils provide to evidence to support the theory of the continental drift.
grigory [225]
I know that you can think of some thing.


<span>Fossil evidence helped prove the theory of continental drift because similar fossils could be found on separate continents, in rocks of roughly the same age, surrounded by layers that matched each other, and in some cases, found nowhere else in the world.

Examples include Mesosaurus and Lystrosaurus. Both are reptiles found in places now separated by oceans. Neither could have swum such great lengths across salt water.

Another example includes the plant Glossopteris, a fernlike plant from about 250 million years ago. That plant has been found in small areas in Africa, South America, Australia, India, and Antarctica, all in small sections that lined up in Alfred Wegener's (the guy who developed the theory of continental drift) view of the supercontinent Pangaea. It should be note that those other fossils also lined up too. Glossopteris has a seedlike structure to it that was too large to be carried such great distances by wind and not strong enough (too fragile) to survive a trip by water. You ask what about birds? That's quite a distance for a bird to travel while carrying a large seed.

All of this together, along with evidence from landforms that matched up just like the fossils, and evidence from climate helped convince Wegener that continental drift had happened.
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4 years ago
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What are two limitations in diffusion experiment ??​
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Once an organism is beyond a certain size, it cannot get essential molecules into and out of cells solely by diffusion. Diffusion is limited by the surface area to volume ratio of the organism.

6 0
3 years ago
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