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netineya [11]
3 years ago
11

What observation led researchers to propose that chloroplasts evolved from cyanobacteria? A) Both produce proteins. B) Both cont

ain mitochondria. C) Both provide structure to cells. D) Both perform photosynthesis.
Biology
2 answers:
MissTica3 years ago
8 0

Answer:

D

Explanation:

edge

a_sh-v [17]3 years ago
4 0
(D) Both perform photosynthesis is the observation that led researchers to propose that chloroplasts evolved from cyanobacteria.
Chloroplasts is the area where photosynthesis takes place. It is a green organelle in a plant cell. Pigments called the chloros in a chlorophyll are needed for the photosynthesis.
Cyanobacteria or blue-gree algae contains a blue photosynthetic pigment and a chlorophyll for photosynthesis.
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3 years ago
A population's emigration in one month totaled three individuals. During the same period, immigration was 17 individuals. Natali
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There was no net change in the given population. The size of the given population remains unchanged.

The explanation behind this is that if we consider the given values-

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Immigration- 17

Natality- 12

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The overall effect on the population will be=

(Emigration+ Mortality) - (Immigration + Natality)

= (3+26) - (17 + 12)

=29-29

=0

Here the emigration means the number of people who have migrated from the population. Mortality refers to the number of deaths in a given population. Immigration is the migration of people into the population and natality is the overall number of births that have taken place in a population. Therefore there is no net gain or loss in the given population. This exerts no effect on the population keeping it unchanged.

Learn more about population here-

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4 0
2 years ago
The cell wall makes plant stems and trees very r
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B. Skeletal

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Which set of values tells us if the reaction is at equilibrium
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the answer is c

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