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    epidermis

    outer layer (from ectoderm) that lines the outside of the animal

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Questions & Answers

what is plant
Odion Reply
Plants are autotrophic
Baramox
what are organisms
Godfred Reply
the diagram below show how the blood of a human embryo flows close to the mothers blood in the placenta . which substances are represent at x in higher concentrations than at y
Joyce Reply
what is ecology
Odion Reply
what is cell
Odion
what is cell
Odion
What is a cell
Awal Reply
What are tissues
Awal
A cell is the smallest unit of living organisms.
hamidat
Tissues are group of similar cells performing a particular function.
hamidat
how to pronounce the word cyanobacteria
siva Reply
Cyano then bacteria. look that "cyano" is just like "ciyano".
hamidat
explain the term transpiration pull
Tank Reply
water is mainly " pulled" through the plant and that the driving force for this process is transpiration from the leaves .This is also referred to as the cohesion- tension -transpiration pull model transport.
Vanessa
explain TRANSIOCATION and GUTATION
Tank
what Is corona
INGIEBE Reply
My brother go and ask GOOGLE😷😷😷
hamidat
Google it for the right answer. Corona is a virus which causes Novel Covid-19 disease that has been declared by WHO as a global or world pandemic.
Katlholo
Why is it called Covid-19?
Katlholo
jjwhat is. condinative system
Odion
joy
Odion
condinative system is the system that harmonize all the. different. part. of. the. body and make. them function as a. specific unit
Odion
Describe the process of protein sythesis?
Kizito Reply
Ribosomes are responsible for protein synthesis in animals.
hamidat
What is a ploidy level
Francis Reply
Ploidy refers to the number of chromosomes. We have 23 pairs of chromosomes in somatic cells. Sex cells are haploid thus 23 chromosomes vs. 46 Chromosomes.
Eric
Evolution is evolvement according to one's environment. Let's use humidity as an example. A person from a very cold environment would not be used to hot humid weather. But over time their body would slowly, slowly adapt.
Eric
Give me (3) types of biodiversity
Jay
Hi guys 🇧🇪
Namutebi
hello boy
Tedi
hi
INGIEBE
yes
amani
what do you guys understand about evolution?
Kiana Reply
it's a process or analayzing some program
Fahamia
but am not sure if some know plz let share
Fahamia
is a study of
Sarah
unfolding or unrolling hence the process of development of growth
Sarah
is the periodic change of the structural features of an organism
Rahim
I think
Rahim
process of developing
Nikita
hi guiz
Mohammed
hello guys
Safuna
hi
Kaniki
Evolution ~ Is the gradual change of development over time in which a new species are formed
amani
Evolution is the sum total of adaptive changes that has existed before.
hamidat
odionjimoh
Odion
hi
Odion
why are diagrams not available
Evans Reply
How can nucleotide molecules of DNA be constructed?construct a six molecules of DNA?
Julia Reply
You take a Deoxyribose sugar. The Deoxyribose sugar has a hydrogen on the second carbon vs. an OH group. The nitrogenous base binds to the #1 Carbon and a phosphate binds to the 5'. When the 2nd NBase bonds, it does so on the 3' Carbon. Thus you have 5' to 3' directional growth.
Eric
what is the explanation of local biomes in Nigeria
Kabir
It would be savanna, tropical grassland.
Eric
describe the breathing mechanism in the body fish.
Jackson Reply
what is genetics.
Jackson
the study of hereditary
Julia
state the importance of biodiversity of organisms in an area?
Chris Reply
Let's compare The Brazilian Rain Forest to Antarctica. There many, many types of flora and fona in The Rain Forest. So many that we are still discovering them vs. the variety in Antarctica.
Eric
it boosts the ecosystem where each species has an important tole
Kizito

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Source:  OpenStax, Biology. OpenStax CNX. Feb 29, 2016 Download for free at http://cnx.org/content/col11448/1.10
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