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ElenaW [278]
3 years ago
15

A scientist constructs a graph to show the age structure of the human population of Country Y. The graph is shown here.

Biology
1 answer:
creativ13 [48]3 years ago
4 0
Theeee anssswwweeerrrr issss (C) forrrrr yourrrrr queessttiioooonnnn
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What is the role of Dna in transcription ?
sladkih [1.3K]

Answer:

Transcription is the process by which the information in a strand of DNA is copied into a new molecule of messenger

Explanation:

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The derived characteristic of protostome development is found in which of the following phyla?
slava [35]

B. Roundworms<span>. 

The Protostome organisms are subclustered into three main groups, moreover nematoda or roundworms belongs to the Ecdysozoa group.</span>

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These Protostome  includes mollusks, annelids, and arthropods

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Please look at the picture and help me​
Anestetic [448]

Answer:

D

Explanation:

because it shows yearly rainfall and the desert can't get rain

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3 years ago
Which body feature do ultramarathon runners count on to give their muscles fuel for endurance? Group of answer choices Toned lig
igomit [66]

Answer:An ultra-marathon can also be defined as a running competition ... World records in female elite and age group athletes in distance-limited races, from ... as skeletal muscle mass, body fat and running training were examined in ... for a long time, and do not make any tempo changes

3 0
3 years ago
In order to determine the rate of photosynthesis (the conversion by plants of carbon dioxide and water into glucose and oxygen),
Rama09 [41]

Answer:

1.6896 grams

Explanation:

Given that:

Total pressure = The pressure of  O_2 + partial pressure of H_2O

∴

The pressure of  O_2  = Total pressure - partial pressure of H_2O

= (754.8 - 17.55) mmHg

= 737.25 mmHg

At standard conditions:

1 mmHg = 0.00131579 atm

∴

737.25 mmHg will be: (737.25*0.00131579) atm = 0.970065928 atm

P ≅ 0.97 atm

The temperature  (T) = 293 K

Volume (V) = 1.31 L

Using ideal gas equation

PV = nRT

0.97 × 1.31 = n × 0.0821 × 293

n = \dfrac{0.97 \times 1.31}{0.0821 \times 293}

n = 0.0528

mass of oxygen  O_2 = no. of moles * molar mass

= 0.0528 * 32

= 1.6896 grams

6 0
3 years ago
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