Is cyanobacteria consider helpful bacteria or bad bacteria???

Why might scientists use computer models in research instead of conducting an experiment on the real system they would like to s

Usimov [2.4K]

Answer:

Using the real system might mess up and using a computer model is clearer and gives a more advanced view

3 0

3 years ago

A patient who is recovering from a myocardial infarction may benefit from meditation, because this technique: sympathetic

nikitadnepr [17]

Meditation decreases sympathetic nervous system activity. A myocaridial infraction is just another word for heart attack and the sympathetic nervous system can play a role in causing a heart attack. The sympathetic nervous system can increase your blood pressure, heart rate, both of which can cause a heart attack, so meditation can keep these things at a low level.

7 0

3 years ago

Diatoms are planktonic unicellular eukaryotes commonly found in oceans and lakes. They contain chloroplasts that have four membr

Zepler [3.9K]

Diatoms contain chloroplasts that have four membranes. These four membranes are evidence of secondary endosymbiosis (Option c).

<h3>What is secondary endosymbiosis?</h3>

Secondary endosymbiosis is a hypothesis used to explain why diatom chloroplasts have four membranes.

According to this hypothesis, diatoms received different genes from distinct photosynthetic and non-photosynthetic ancestors.

The acquisition of genes of different ancestors led to diatoms having chloroplasts with four membranes.

Learn more about the endosymbiosis hypothesis here:

brainly.com/question/2957447

5 0

3 years ago

Which of these gymnosperms are known to be important in maintaining the balance of carbon in an ecosystem?

CaHeK987 [17]

The correct answer is: [D]:

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→ " redwood tree forests " .

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Note: Let us consider the other answer choices.

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Choice: [A]: "garden flowering plants" ; is incorrect — since these are not generally considered to be part of a true or traditional "ecosystem" ; and especially since "garden flowering plants" are, in fact, "flowering plants" — which means that they are "angiosperms" — Not "gymnosperms ".

→ Rule out: " Choice: [A] " .

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Choice: [B]: " ferns and liverworts " ; is incorrect — since both ferns — as well as liverworts — are Not "gymnosperms ".

Liverworts are "bryophytes" {which lack true vascular tissue] ; and ferns are "pterophytes" ["seedless vascular plants"].

→ Rule out: " Choice: [B] " .

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Choice: [C]: " mosses and horsetails "; is incorrect ; since both mosses — as well as horsetails — are Not "gymnosperms ". Mosses are "bryophytes" (see aforementioned) ; and horsetails are "non-seed bearing plants" that spread vegetatively [underground; by asexual reproduction — and Not by seed .].

→ Rule out: " Choice: [C] " .

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Choice: [D]: " redwood tree forests " ;

— is the only answer choice provided that is a "gymnosperm".

Furthermore, the "redwood tree" is a conifer (i.e. "coniferous; or, "cone-bearing" plant} that reproduces through seeds spread by "cone") — and all "conifers" are a type of "gymnosperm."

Furthermore, "redwood trees" grow large and tall, and redwood forest communities within an ecosystem; due to there size and presence, are: "known to be important in maintaining the balance of carbon in an ecosystem."

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→ As such, the correct answer is:

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→ Answer choice: [D]: " redwood tree forests " .

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Hope this helps!

Best wishes to you in your academic endeavors

— and within the "Brainly" community!

__________________________________________________

5 0

4 years ago

Read 2 more answers

The simplest structured unit of a compound is a(n): electron atom proton molecule

tiny-mole [99]

The answer is molecule

8 0

4 years ago

Read 2 more answers