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2 years ago

How does the length of sunlight per day change over the year

Biology

1 answer:

Sladkaya [172]2 years ago

4 0

Answer: it can change because...

Explanation: the tilt of the earths axis is a little over 25 degreas so when the earth is tilted twards the sun the day is longe and vise versa because of this the seasons are created

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The Punnett square predicts the ratio of genotypes in the offspring, based on the genotypes of the parents. The Punnett square b

dlinn [17]

25% due to the radius of earth and the galactic prisons of the universe

4 0

1 year ago

The bacterium, E. coli prefer to consume glucose. If, however, there is no glucose present, they will utilize lactose as an ener

soldi70 [24.7K]

Answer:

Lactose is more likely to be utilised by E. Coli than Arabinose because Lactose will yield more energy (ATP) and lactose breakdown will give glucose and galactose and these will enter into the glycolytic pathways to pyruvate for ATP generation until Arabinose which will undergo Pentose phosphate pathway and this does not produce enough energy.

6 0

2 years ago

The inability of organisms to evolve anything that could be an advantage reflects _____.

sergey [27]

The inability of organisms to evolve anything that could be an advantage reflects "the limit of historical constraints".

<h3>What is the limit of historical constraints of evolution?</h3>

Although evolution is a powerful process that leads to

rapid changes in the characteristics of organisms, limits

to evolution arise from a lack of genetic variation, a

loss of well-adapted genotypes in populations due to

gene flow, trait interactions leading to trade-offs, and/

or the difficulty of evolving simultaneous changes in a

number of traits. This is the limit of historical constraints of evolution.

<h3>What are the factors that can cause an organism to evolve?</h3>

Four main factors lead to evolution:

(1) the potential for a species to diversify;

(2) heritable genetic variation among individuals within a species as a result of mutation and sexual reproduction;

(3) competition for scarce resources; and

(4) the spread of organisms that are better able to endure and procreate in the environment.

To learn more about evolution visit:

brainly.com/question/12051929

#SPJ4

4 0

1 year ago

The absence of which of these will not affect photosynthesis is - oxygen, Carbon dioxide, water, Chlorophyll, light. Give reason

In-s [12.5K]

Answer:

Oxygen

Explanation:

Oxygen is the by product of photolysis during photosynthesis whereby water molecules are split to form protons (H+ ions), electrons and oxygen (by product).

Oxygen is not needed during any of the reactions in photosynthesis and Calvin cycle and will not affect the rate of photosynthesis or possibility of photosynthesis occurring. However, it will affect the process of aerobic respiration instead.

Carbon dioxide is needed in carbon fixation during the Calvin cycle. Without it, 6 carbon sugars cannot be formed.

Water is needed for photolysis to produce protons (maintain the electrochemical gradient) and electrons (to replenish lost electrons)

Chlorophyll are pigments that harvest light energy to excite electrons produced from photolysis of water to be passed down the electron transport chain.

Light is needed as a source of energy to energise the electrons

5 0

2 years ago

The cycads, a mostly tropical phylum of gymnosperms, evolved about 300 million years ago and were dominant forms during the age

ozzi

Answer:

poliinators and flagellated sperm

Explanation:

Cycads (phylum Cycadophyta) together with Ginkgophyta, Gnetophyta, Pinophyta, Pteridospermales and Cordaitales belong to the gymnosperms (naked seed-producing plants). They are different than angiosperms which produce encased seeds within an ovary.

Cycads (but also Ginkgo) produce swimming sperm that is different than all other groups which produce sperm without swimming flagella.

Also, unlike other groups of gymnosperms, cycads have specialized pollinators, beetls.

6 0

3 years ago