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makkiz [27]
3 years ago
15

The rank of blood cells in a normal person and one with polycythemia is the same. How can you conclude that the person has polyc

ythemia?
Biology
1 answer:
likoan [24]3 years ago
5 0
Nosebleeds and high blood pressure
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inn [45]

Answer:

archaea

Explanation:

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3 years ago
What is needed to estimate species relatedness with a molecular clock?
Dvinal [7]


Out of the following given choices;

A. DNA accumulates mutations at a regular rate

B. known mutation rate for a gene

C. the number of differences in DNA sequences for a gene in two species

D. the same gene identified in two species

E. All answers are corrects

 

The answer is E. The molecular clock used rates of mutation to determine the prehistoric time when two species that share a common ancestor diverged. The benchmarks for determining the mutation rate are often fossil or archaeological dates.






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3 years ago
Which direction does Xylem flow? Phloem?
PIT_PIT [208]

Answer:

The movement of Xylem is unidirectional and phloem is bidirectional

Explanation:

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Phloem transport is bidirectional because sucrose gets accumulated in the phloem tissue and absorbs water creating a high turgor pressure. ... Hence the water flows from regions of high turgor pressure to low turgor pressure and the direction can be upwards or downwards from the leaves based on the gradient.

4 0
3 years ago
How does carbon move from plants to animals?<br> Group of answer choices
il63 [147K]

Answer: through the process of photosynthesis

Explanation:

carbon dioxide is pulled from the air to produce food made from carbon for plant growth. Carbon moves from plants to animals. Through food chains, the carbon that is in plants moves to the animals that eat them. Animals that eat other animals get the carbon from their food too.

5 0
3 years ago
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Tell me five different invasive species
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<span><span>Acacia species (Australian wattles)

</span><span>Argemone mexicana (Mexican poppy)
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Caesalpinia decapetala (Mauritius thorn)
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Cereus jamacaru (Queen of the Night cactus)
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Chromolaena odorata (Triffid weed)</span></span>
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