GIVING BRAINLYYY JUST NEED TO DOUBLE CHECK

Around 3.8 billion years ago, near the conclusion of this phase known as the late heavy bombardment, life on Earth first emerged, hence option A is correct.

Even before the 3.5 billion years ago when the oldest fossils on Earth were discovered, just at the conclusion of the time of late intense bombardment, there is evidence of biological activity.

The 3.5 billion-year-old "stromatolites," which are hard structures created by bacteria, also provide evidence of their presence. Stromatolites are produced when microbe-made sticky mats catch and organize sediments into layers.

It has been discovered that trophozoites contain organic material from 3.5 billion years ago. 3.5 billion-year-old rocks have been found to contain microbial remnants, some of the planet's earliest evidence of life.

Therefore, 3.8 billion years ago, near the conclusion of this phase known as the late heavy bombardment, life on Earth first emerged, hence option A is correct.

Learn more about the origin of life, here:

https://brainly.com/question/28809520

#SPJ2

Answer:

D. Mutations

Explanation:

Answer:

They fill new roles in changed environment

Explanation:

Answer:

Hope it helps

Have a good day

Answer:

Favorable variations may allow an organism to be better adapted to its environment and survive to reproduce. Beneficial traits are favored in a population so that they may become better represented. Changes in the genetic makeup of a species may result in a new species; this is biological evolution.

Answer:

D. The process occurs only in multicellular organisms.

Answer:

Explanation:

VE RAPIDO ES LA RESPUESTA B

Answer

75% chance

Explanation:

The dominant and recessive are the terms used to explain the phenotypic traits and genetic makeup of an organism. The cross between a heterozygous species will result in a 75% chance of the species expressing a dominant phenotype.

The correct answer is:

Option B. 75%

The heterozygous condition refers to the one dominant and one recessive allele, whereas purebred is the condition in which both alleles are either recessive or dominant.

The dominant alleles are always expressed in purebred and heterozygous conditions.

The recessive alleles are expressed in purebred conditions only.

In the given attachment, consider the cross between round shaped-seeds in heterozygous conditions.

Thus, the chance of progeny will have round-shaped seeds is 75%.

To know more about monohybrid cross, refer to the following link:

https://brainly.com/question/1185199

Answer:

Yes. both prokaryotic cells and eukaryotic cells have ribosomes, DNA and a cell membrane.

Answer:

Yes,it's clear that bees play a vital role in food production. They are excellent pollinators! Most food crops—including fruits, vegetables, nuts, and seeds—must go through pollination. That's the process of moving tiny pollen cells between plants to help them make seeds.

Hope it helps

Please mark me as the brainliest

Thank you

Answer:

The answer is B

Explanation:

Answer:

What is the national animal of the USA - American Bison

What is the national tree of the USA - Mighty Oak Tree

What is the national bird of the USA - Bald Eagle

What is the national flower of the USA - Rose

I liked your questions...!!

Seeya soon!! :) ;)

The difference is that mitosis produces two diploid (2n) somatic cells that are genetically identical, but meiosis produces four haploid (n) gametes that are genetically unique from each other.

Answer: True

Explanation: Some types of sac fungi are used in the creation of vitamins and antibiotics.

Answer:

Because beateria that don't have the antibiotic resistant trait will die much more faster than the ones with antibiotic resistance.

Explanation:

Answer:

Gills

Explanation:

In order to remove oxygen from the water, they rely on special organs called "gills." Gills are feathery organs full of blood vessels. A fish breathes by taking water into its mouth and forcing it out through the gill passages.

www.wonderopolis.org › wonder

How Do Fish Breathe

Answer:

Gills

Explanation:

Answer:

Two people with brown hair could have a child with blonde hair, but only if they are both heterozygous.

Answer:

The DNA of the cell tells the cell how to make proteins

Explanation:

Answer:

Carbon dioxide (CO2) makes up the vast majority of greenhouse gas emissions from the sector, but smaller amounts of methane (CH4) and nitrous oxide (N2O) are also emitted. These gases are released during the combustion of fossil fuels, such as coal, oil, and natural gas, to produce electricity.

Explanation:

What can Carbon do?

Carbon emissions affect the planet significantly, as they are the greenhouse gas with the highest levels of emissions in the atmosphere. This, of course, causes global warming and ultimately, climate change. Carbon dioxide is released into the atmosphere when fossil fuels — coal, natural gas, and oil — are burned.

Answer:

agreed

Explanation:

for certain things like how humans were created and everything like that I totally agree because you can't really do research if something that over the years is probably either hidden or gone so if there wasn't any evidence of how any of this came to be by now it would be gone. some things you just can't put a logical explanation on

Answer: this is adaptation, but not in the way suggested in the question.

Explanation:

The question is suggesting that the 1% or so of turtle hatchlings that make it to maturity are the result of a variation that gives a selective advantage. This is not so. The only thing being selected for is sheer luck. The underlying adaptation is that all eggs hatch within a short period, so that predators are overwhelmed by numbers and some offspring by chance make it to the water, still dangerous, but less so than the sand. After the hatchlings reach the sea chance will still be a factor, but it is at this stage that natural selection may operate on advantageous variations.

There are two reproductive strategies, common to plants as well as animals. Turtles represent one of those strategies, which is to invest resources to produce large numbers of immediately self-sufficient offspring so that at least some will survive. The other strategy is to produce one or few offspring and invest resources in protecting and feeding it or them until self-sufficient and capable of surviving to maturity.

These are adaptations which are selected for because they confer advantage for the species concerned. One or the other may be the better solution depending on the species. Mammals, for example, invest in the latter strategy.

Answer:

all the time

Explanation:

Answer:

Yea I don't like it when that happens they normally get reported by someone but....

Explanation:

Answer:

AUGCGU

Explanation:

According to the base-pairing rule, Thymine (T) always pairs with Adenine (A), and Cytosine (C) always pairs with Guanine (G). In addition, RNA has Uracil (U) in the place of Thymine. Following these two rules, TACGCA is transcribed as follows:

   T A C G C A

   A U G C G U

Hence, the transcription product of TACGCA is AUGCGU.

Answer:

A homo-zygous dominant genotype and a heterozygous genotype

Explanation:

A homo-zygous dominant genotype refers to a genotype that contains two copies of the dominant gene variant, i.e., two dominant alleles at its locus, thereby individuals carrying this genotype will show a dominant phenotype. Moreover, a heterozygous genotype is a genotype that contains both dominant and recessive alleles at its locus. In a heterozygous genotype, the dominant allele is always expressed and masks the recessive allele, thereby showing a dominant phenotype.