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krek1111 [17]
3 years ago
5

Which substance provides humans with their main source of energy

Biology
2 answers:
AveGali [126]3 years ago
5 0

A substance that provides humans with their main source of energy would be; food.

Natalka [10]3 years ago
5 0
Food, would be the substance that gives people energy
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During fertilization, a haploid sperm cell unites with a haploid egg cell to form a diploid zygote, as shown below.
Katarina [22]

Answer:

W

Explanation:

Zygote forms from haploid cells which form a diploid. The diploid zygote will then keep dividing by mitosis the first division always forms 2 cells from one parent cell.

8 0
3 years ago
A researcher is studying how depression tends to be experienced by people of different ages. The researcher interviews depressed
navik [9.2K]

A researcher is studying how depression tends to be experienced by people of different ages. The researcher interviews depressed adolescents, young adults, individuals in their 30s and 50s, and those over 70 years old. The research design being used is called <u>cross-sectional</u>.

<u>Option: D</u>

<u>Explanation:</u>

A kind of design for observational study is understood as a cross-sectional framework. In a cross-sectional analysis the investigator simultaneously tests the participants in the study's result and exposures. Through cross sectional studies one can estimate the prevalence of disease.

A cross-sectional analysis, for instance, could be used to assess whether vulnerability to specific risk factors would correlate with specific outcomes. For illustration, a researcher may gather cross-sectional data about past smoking habits and current lung cancer diagnoses.

4 0
3 years ago
The wastes of excretion are in the form of ________ and ________​
nlexa [21]

Answer:

Solid e.g faeces

Liquid e.g Urine

3 0
3 years ago
Does an island in the ocean have high or low speciation
valina [46]

low speciation because Speciation is how a new kind of plant or animal species is created. Speciation occurs when a group within a species separates from other members of its species and develops its own unique characteristics and also people don't live on Islands so that there wouldn't be people to plant plants and there wouldn't be animals on island because animals won't be able to survive because they have less food

hope this helps

8 0
2 years ago
How do genes mix in humans?
babunello [35]
In the X and Y chromosomes. 50% of your mom's genes are in the X chromosome, and 50% of your dad's in the Y.
7 0
3 years ago
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