scientist hypothesize that the development of organisms with which ability led to the collection of oxygen in earth atmosphere

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Answer 1
Answer: The answer is tiny organisms known as cyanobacteria, or blue-green algae. These microbes conduct photosynthesis: using sunshine, water and carbon dioxide to produce carbohydrates and, yes, oxygen. In fact, all the plants on Earth incorporate symbiotic cyanobacteria (known as chloroplasts) to do their photosynthesis for them down to this day.

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A Punnett square is used to determine the A. result of meiosis. B. result of segregation. C. probable outcome of a cross. D. actual outcome of a cross.

Answers

Answer:

C. Possible outcome of a cross

Explanation:

A Punnett square is a tool used in genetics to predict the probable outcomes of a cross between two organisms. It is a visual representation of the possible combinations of alleles from each parent that could be passed on to their offspring. The Punnett square is used to calculate the probability of each genotype and phenotype in the offspring, based on the alleles of the parents. It does not determine the actual outcome of a cross, but rather predicts the probabilities of different outcomes.

What is syntax?A. the use of rambling, private thoughts
B. the arrangement of words in a sentence
C. the point of view from which a story is narrated
D. language that is not intended to be taken literally

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Answer: B. the arrangement of words in a sentence.

Syntax is the set of rules, principles and processes that needs to be followed so as to arrange words in a grammatically correct order to develop sentences that exhibit appropriate meaning. The rules of syntax are followed in all languages.

Syntax is also collectively known the arrangement of words in a sentence. The correct answer to your questino is B. For that reason it isn't possible for any other answer in this case to be correct because B actually denotes a rather formal way of how you could talk about syntax. 

in a given hybridization between two flowers, red "R" is dominant, and white "r" is recessive. In a cross between two white-flowered plants, all of the offspring had white flowers. If a plant grower wanted to produce red flowers, what should s/he consider during breeding?

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Ans.

The dominant allele can be defined as the allele, which can express itself in both heterozygous and homozygous conditions. On the other hand, recessive allele can only express itself in homozygous condition (when both the alleles for recessive traits are present. It means presence of one dominant allele can hide the expression of recessive allele.

In given experimental flower, red color is dominant over white color of flower. So, 'if a plant grower wants to produce red flowers only, he should choose both the parent plants having red flowers as they have at least one allele for red color that would transfer to their offspring.'

Lets understand this in a calculative way,  

Let the parents genotype be RR and Rr

The offspring’s produced are – RR, Rr, Rr, RR, Thus all the offsprings are white as r is recessive, for producing a red flower the offspring must have “rr” genotype.  

Now if parents have Rr and rr genotype , then the offspring would have Rr, rr, rr, Rr giving two white and two red flower. Of the second case may be where both the parent white flower are the carrier with genotype “Rr”

Thus in order to produce red flower the parents with following genotypes is necessary –  

a) Both parents having Rr

b) One parents with rr and the other parent with Rr genotype

Why am I addicted to CHEESE?

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Cause you are an obese child

Answer:

yessuh!!!!

Explanation:

cheese slaps  

What are the six kingdoms of life

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Answer:

Archaebacteria, Eubacteria, Protista, Fungi, Plantae, Animalia.

Explanation:

According to biological classification system, there are six different kingdoms, in which organisms are classified according to their common characteristics.  

Kingdom Eubacateria includes unicellular, prokaryotic organisms. These organisms lack true nucleus and other complex cell organelles. Examples: bacteria and archaea.

Kingdom Protista includes unicellular (mainly), eukaryotic organisms having true nucleus and other membrane-bound organelles. Protists may be autotrophic or heterotrophic. Amoeba and paramecium are examples of protists.

Kingdom Fungi include eukaryotic, multicellular (yeast is an unicellular fungus) organisms. They are heterotrophic organisms that depend on other organisms for food. Examples: mushrooms and aspergillus.

Kingdom Plantae includes multicellular, eukaryotic, autotrophic organisms. They contain chlorophyll molecules that help in photosynthesis and make their own food. Examples: all green plants.

Kingdom Animalia include all multicellular, eukaryotic animals that reproduce only via sexual reproduction. They are heterotrophic organisms and depend upon other organisms for food. Examples: humans, insects, and fishes.

Archaebacteria, Eubacteria, Animalia, Protista, Fungi, Plantae

A calorie is a unit of

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a calorie is a unit of energy
Calories are units of energy.