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kaheart [24]
2 years ago
15

Please help urgent due today

Biology
2 answers:
Serjik [45]2 years ago
7 0

Answer:

Your answer is D.

Explanation:

Hope that answers your question.

Solnce55 [7]2 years ago
4 0

Answer:

D. they return nitrogen to the system

Explanation:

hope it helps

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Why are biofuels derived from plants?
Lemur [1.5K]

Answer:

Biofuels are renewable fuels that are produced from biomass, organisms that were formed and stopped living a short time ago. The energy in the biofuels is called bioenergy. The major constituents of biomass are cellulose, lignin, starch and sugar, but many plants also contain other organic compounds that are beneficial for energy recovery from the material due to their physical structure and chemical composition. The difference between biofuels and fossil fuels is that fossil fuels take millions of years for new formation while new biomass for biofuels is constantly being formed. This means that biofuels can usually be considered carbon neutral as the carbon dioxide emitted during combustion is constantly bound to new biomass in a closed cycle.

7 0
2 years ago
Somebody help me with this please
Natalka [10]

Answer:cell wall yes plant cell no animal

mitochondria yes both

chloroplasts yes plant cell no animal cell

nucleus yes both

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Explanation:

5 0
3 years ago
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Which best describes a benefit of using DNA technology in medicine?
solniwko [45]
What are the options? you can use DNA technology to fix specific proteins for different people
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3 years ago
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If 1000 f2 offspring are obtained, how many flies of each phenotype are expected?
aniked [119]
<span>In Drosophila + indicates wild-type allele for any gene, m is mahogany and e is ebony. Female parents are m+/m+ and males are +e/+e. F1 are m+/+e, all wild type. F1 females are crossed with me/me males - the test cross. Offspring will be : non recombinant m+/me, mahogany wild type or +e/me wild type ebony. OR recombinant me/me mahogany ebony or ++/++ wild type. As the two genes are 25 map units apart, the percentage of recombinants will be 25% and therefore percentage parental types will be 75%. 75% 1000 is 750. There are two parental types, so you would expect 375 of each. Therefore, you would expect 375 m+/me and 375 +e/me. 25% of 1000 is 250 split between two recombinants =125 of each. Therefore you would expect 135 me/me and 125 ++/++</span>
7 0
3 years ago
Where does the majority of stem growth in a plant occur?
Xelga [282]
The answer for the question is the Apical meristem. 
Growth in plants occurs as the stems and roots lengthen. Some plants, especially those that are woody, also increase in thickness during their life span. The increase in length of the shoot and the root is referred to as primary growth. It is the result of cell division in the shoot apical meristem. 
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2 years ago
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