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Ksju [112]
3 years ago
13

Which of these conditions is considered necessary for a

Biology
1 answer:
ddd [48]3 years ago
6 0

Answer:

All

Explanation:

You would need carbon dioxide to be able to sustain life forms such as plants, warm enough temperatures to allow the development of animals, (because they cannot be frozen), they would, of course, need oxygen to allow anyone to breathe, and finally liquid water to sustain healthy life, because we must hydrate that is necessary for survival.

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Why is it important for the chromosomes to make copies of themselves before mitosis occurs
valina [46]
So that both sets of cells will have sets of chromosomes after it copies and divides
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3 years ago
Where does chemical digestion starts
pshichka [43]
It starts in the mouth where chemicals in the saliva called amylase, break down starch and other food molecules into smaller sugars and molecules. Those are then carried down to the stomach. So the saliva in the mouth is really what starts the chemical digestion. 

Hope this helps :)
6 0
3 years ago
Read 2 more answers
How do organisms return nutrients and water to the environment
diamong [38]

Through their byproducts, and waste

4 0
3 years ago
which of these statements is true about biogeochemical cycles? a) in biogeochemical cycles, nutrients are not synthesized anew b
mafiozo [28]
The answer is a) in biogeochemical cycles, nutrients are not synthesized anew but are recycled in the <span>biosphere.

Biogeochemical cycles are pathways by which chemical substances move through biosphere and geosphere (lithosphere), as well as atmosphere and hydrosphere. In these cycles nutrients are recycled, they are not lost. Let's take for example a carbon cycle:
</span>

<span>:- Carbon is released into the atmosphere as carbon dioxide from respiration.</span>

<span>- Producers (plants) absorb carbon dioxide and make carbohydrates in photosynthesis.</span>

<span>- Consumers (animals) eat producers and intake carbohydrates.</span>

<span>- After the death of both producers and consumers, decomposers (such as Actinobacteria, or other bacteria or fungi) eat that dead organisms and carbon are released into the environment.</span>

<span>
</span>

<span>So, carbon is not synthesized anew, but it is recycled.</span>

6 0
3 years ago
A scientist has a pea plant with yellow seeds. It has one allele for yellow seeds (Y) and one for green seeds (y).
Eva8 [605]

Answer:heterozygous

Explanation:

The genotype of an organism is its genetic makeup which is characterized by the presence of alleles of a gene.

The genotype can be broadly of two types :

1. Heterozygous - when an individual has 2 different variants of a gene known as alleles, then the person is said to be heterozygous for that gene.

2. Homozygous - if both the alleles of a gene are the same, then the person is said to be homozygous.

Since in the given situation you have two different alleles - yellow and green represented by Y and y, the individual is heterozygous.

Explanation:

5 0
4 years ago
Read 2 more answers
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