help with number 12 please

In the American Midwest, native seed crops goosefoot, sumpweed, and sunflowers were farmed about 6,000-1,000 yBP. These crops were used by early Amerindians as sources of food.

The native seed crops goosefoot, sumpweed, and sunflower were used by early Amerindian natives as food prior to the arrival of the squash, beans and maize from Mexico.

The sunflower is nowadays a worldwide extended crop used in intensive farming due to its high yield and high nutritional value.

The first domesticated plants in Illinois about 1800 years before Common Era include goosefoot (Chenopodium berlandieri) and sunflower (Helianthus annuus L.).

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Answer:

B

Explanation:

Cytoplasm.

This occurs in animal cells

Answer:

The septum

Explanation:

The septum is a thick wall of muscle that divides the heart. It separates the left and right sides of the heart.

Answer:

It increases genetic variation.

Explanation:

Meiosis does not decrease the number of chromosomes nor increase the number of them, it merely splits them.

While it could increase mutations, this might not necesarily be a good thing.

However, it does increase genetic variation, especially during the process where crossing over occurs. Increased genetic variation is beneficial for the population for many reasons like higher resistance to certain diseases. Increasing genetic variation also makes a species look unique from other members of the species.

Answer:

1. False

2. True

3. True

4. Kingdoms

5. Backbones

6. Two names

Explanation:

I'm really sorry if I got it wrong, some of the questions are not in my Biology syllabus.

*first and second questions' answers are not sure

Genotype refers to the complete genetic make-up and can also be referred to as the alleles an organism carries on a particular gene.

John's genotype with unattached being dominant is Aa.

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Answer: B

Explanation: im sorry if this is wrong

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Answer: Water is a "polar" molecule, meaning that there is an uneven distribution of electron density. Water has a partial negative charge ( ) near the oxygen atom due the unshared pairs of electrons, and partial positive charges ( ) near the hydrogen atoms.

Explanation: dont have one

Answer:

It's the right answer already

Answer:

During cellular respiration, glucose is broken down in the presence of oxygen to produce carbon dioxide and water. Energy released during the reaction is captured by the energy-carrying molecule ATP (adenosine triphosphate).

Answer: Regulates the transport of materials entering and exiting the cell.

Answer:

Choose a specific topic related to nutrition, and do some research on it (Wikipedia is always a good place to start). Maybe look at a few health blogs for inspiration and just to see the writing style (be sure not to copy them though!)

Answer:

Your topic (Nutritional blog post) explain the benefits of having proper nutrition and why should we do it. List down items we may sacrifice (ex. eating junk food) but the good effects this will bring us. Cite what will happen if we have healthy nutrition and back it up with evidence (Ex. A professional science study in 1993 has found that people who have healthy nutrition are less likely to disease [THIS IS ONLY EXAMPLE!]) Next, recommend some healthy foods or make a nutritional health diet for all the days in the week, balancing carbohydrates and giving the right amount of nutrition and calories.

Explanation:

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Letter "A" would be correct

Answer:

I think it's D..

Explanation:

There are different types of deserts.

The Modern Synthetic Theory of Evolution combines the Darwinian theory of evolution with Mendel's genetic theory.

The theory explains that changes in the genes of organism are what causes the evolution of organism.

The Darwinian theory of Evolution states that organisms better adapted to their environment survive and give birth to offspring suited for their environment.

The Mendelian theory of genetics states that the combination and resassortment of genes are responsiblefor character inheritance.

Therefore, the Modern Synthetic Theory of Evolution combines the Darwinian theory of evolution with Mendel's genetic theory.

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Fossils are used to determine the ages of rock layers. ... Index fossils are of organisms that lived over a wide area. They lived for a fairly short period of time. An index fossil allows a scientist to determine the age of the rock it is in.

Answer:

humans

Explanation:

Based on the chart, we can conclude that the first vertebrates were fish. Moreover, the chart also shows that flowering plants are the last plant taxonomic group that emerged on Earth.

In this case, the chart suggests that the earliest vertebrates (fish) evolved during the Ordovician period.

The main animal groups that emerged during vertebrate evolution include (in this order) amphibians, reptiles, mammals, birds and finally humans.

Moreover, according to the chart, the latest major group of plants to evolve were flowering plants during the Cretaceous period.

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Answer: methionine, vAline and glycine

Explanation:

Answer:

1st 4 are the physcal hazards

Explanation:

a)

b)

c)

d)

The four types of physical hazards are Extreme Temperature, Radiation, Vibration and Noise.  

A physical hazard is an agent, factor or circumstance that can cause harm with contact. They can be classified as type of occupational hazard or environmental hazard.  

Physical hazards include ergonomic hazards, radiation, heat and cold stress, vibration hazards, and noise hazards.

Whereas, Corrosive substances comes into chemical hazards and Pathogens can be classified as biological hazards.  

Thus, the Extreme Temperature, Radiation, Vibration and Noise are the best four options as the type of physical hazards.

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Answer:

c

Explanation:

Answer:

c

Explanation:

Chemosynthesis is the synthesis of organic compounds by bacteria or other living organisms using energy derived from reactions involving inorganic chemicals, typically in the absence of sunlight.

Answer:

Vertebrae

Explanation:

both birds and reptiles have a backbone or a vertabrae. therefore they are Vertebrates.

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The organelle where cellular respiration where pyruvate dehydrogenase is most likely active is; Choice D: The mitochondrial matrix.

Discussion:

In eukaryotes, the pyruvate dehydrogenase complex, like the enzymes for citric acid cycle and oxidation of fatty acids, is located in the mitochondrial complex, where is associated with the surface of the inner membrane facing the matrix.

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The complementary nature of DNA rule ensures that only some particular base pairing are allowed and the DNA strands are complementary to each other.

The benefit of this complementary nature of DNA is that it helps in the synthesizing of two new identical DNA strands from each parent strand.

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Answer:

Cell respiration and photosynthesis

Explanation:

In photosynthesis, organisms make high-energy compounds (glucose for example) by using carbon dioxide (CO2) and produce oxygen. In cellular respiration, organisms breakdown glucose and other compounds through consuming oxygen and produce CO2.

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Answer:

Gravity and inertia act in opposition on the Earth's oceans, creating tidal bulges on opposite sites of the planet. On the “near” side of the Earth (the side facing the moon), the gravitational force of the moon pulls the ocean's waters toward it, creating one bulge.

Explanation:

Answer:

Source:

Answer:

hypothalamus

Explanation:

Hunger is partly controlled by a part of your brain called the hypothalamus, your blood sugar (glucose) level, how empty your stomach and intestines are, and certain hormone levels in your body. Fullness is a feeling of being satisfied.

Answer:

yessir

Explanation:

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