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3 years ago

What evidence do paleobotanists look for that indicates the movement of plants from water to land?

1 answer:

5 0

Each leaf contains a waxy cuticle, this waxy cuticle is like an epidermal cell that covers the upper and lower surface of a leaf. The cuticle repels water, prevents rapid desiccation, acts as a selective filter in reflecting harmful ultraviolet light, and allows the absorption of visible light for photosynthesis. The Waxy cuticle decrease evaporation from leaves.

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Identify the evolutionary forces that can cause allele frequencies to change from one generation to the next.

Irina-Kira [14]

Allele frequencies to change from one generation to the next.-

B. Mutation; C. Random genetic drift; D. Migration; F. Natural selection

Selection, mutation, migration, and genetic drift are the mechanisms that effect changes in allele frequencies.
When one or more of these forces are acting, the population violates Hardy-Weinberg assumptions, and evolution occurs.

Why do allele frequencies change from one generation to the next?

Random selection: Allele frequencies may fluctuate from one generation to the next when people with particular genotypes outlive those with different genotypes.

No mutation: Allele frequencies may fluctuate from one generation to the next if new alleles are produced via mutation or if alleles mutate at different rates.

What are 5 factors that cause changes in allele frequency?

A population, a collection of interacting individuals of a single species, exhibits a change in allele frequency from one generation to the next due to five main processes.
These include natural selection, gene flow, genetic drift, and mutation.

Learn more about allele frequency

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The complete question is -

Identify the evolutionary forces that can cause allele frequencies to change from one generation to the next. Check all that apply

A. Inbreeding

B. Mutation,

C. random genetic drift

D. migration

E. extinction

F. natural selection

6 0

2 years ago

castortr0y [4]

I believe It is A because fissure eruptions are common on large volcanoes and also is built up by many layers of hardened lava, tephra, pumice, and volcanic ash.

8 0

3 years ago

Which statements explain the relationship belween photosynthesis and cellular respiration? Check all that apply

Sedaia [141]

Answer: The third and fifth statements are true. Oxygen released from photosynthesis is breathed in by animals to break down glucose, and the carbon dioxide released by animals is used to build glucose in photosynthesis.

Explanation: Oxygen and glucose are the reactants for cellular respiration in animals. Oxygen is breathed in through the air, which is produced by plants. When the process of cellular respiration is complete, animals breathe out carbon dioxide as a product, which plants need to perform photosynthesis. Plants perform photosynthesis and send oxygen into the environment. The reactants of photosynthesis are the products of cellular respiration in animals, and vice versa, but the reactants and products are not the same.

6 0

3 years ago

The most potent single predictor of an infant's future health status is

SIZIF [17.4K]

The most potent single predictor of an infant's future health status is the infants birth weight. An infant at 5 months of age should have doubled the birth weight.

8 0

3 years ago

5. Create a script of dialogue that could occur between a

harkovskaia [24]

Answer:

Pauline and David are talking about the use of resources in a sustainable manner so that both humans and living organisms can co-exist and enjoy the benefits of nature. Pauline is a conservationist whereas David lives in a biodiversity hot spot. The conversation starts when David and Pauline meet in an ecology conference. Pauline is standing in front of poster talking about conservation of environment and wildlife. David pass by and see that the topic is quite interesting.

David: Hey, I like your topic of presentation.

Pauline: Thank you! are you also a conservationist?

David: I wish I could be but my job nature doesn't allow me to work in this area. However, I truely care about the wildlife which are being threatened in my neighbourhood...

Pauline: Oh, I am sorry to hear that... Where do you live?

David: I live between the city and forest, which is being affected by humans interventions. I see everyday a lot of animals dying on roads because they are forced to migrate because of forest cutting, however, while doing so, they are killed by human's actions.

Pauline: I absoultely hate this behavior of humans. I think human's should understand the importance of other organisms in biogeochemical cycles otherwise our generations are going to pay a lot for this.

David: Definitely, I wish we could reverse such decisions but again, they are not easy. With growing human's populations, we need to adjust everything accordingly.

Pauline: You are right. But we can develop strategies where both humans and animals can live in hormony, such as development of ecological corridors in a forest if we want to make a road, could help these creatures to survive well.

David: I cannot agree more. I hope such things are encouraged in near future. But I really liked your idea and would like to discusss sometime later.

Pauline: Sure, you can visit me anytime in my office at XYZ location.

David: Thank you, see you than!

Pauline: See you!

3 0

3 years ago