BIOLOGY MIDDLE SCHOOL

What are the major divisions of heart

Answers

Answer 1
Answer: The heart is divided into four main parts also known as chambers
1)The left auricle
2) the right auricle
3) the left ventricle
4) the right ventrcal
hope it helps u
Answer 2
Answer: There are four major divisions of the heart-
The left auricle
The left ventricle
the right ventricle
The right auricle

All of them perform different functions.

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What part of the city has a similar job to the cell membrane ?
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Which statement describes gravity? Check all that applyThere is no defined unit of measurement for gravity
Gravity is the force that pulls objects toward Earth's center
Objects that have a small mass will have no gravitational pull
Gravitational pull between two objects increases as the mass of one increases
Gravitational puli decreases when the distance between two objects increases

Answers

Answer:

gravity is the force that pulls objects towards earths center

Georgia's overall coastal habitats were rated and the results can be seen in the bar graph. The coastal habitats by in large were rated as "fair". One important indicator in the graph is the chlorophyll a category. Explain how the ratings for chlorophyll a might influence the overall ratings of coastal habitats. A) The algae that contains chlorophyll a can be detrimental to other life forms. As algae increase the total organic carbon increases. B) The more chlorophyll a present, the more algae present. This can be a result of higher nitrogen and phosphorus and may result in lowered dissolved oxygen if algal blooms develop, C) Chlorophyll, a plant pigment, is measured to indicate the amount of algae in the water. The more chlorophyll a present, the more plant growth and the healthier the aquatic environment. D) There is a direct correlation between algae present and benthic organisms. The more algae, the more benthic invertebrates. That means more abundant food for other animals in the coastal habitats.

Answers

Answer:

The answer is:B) The more chlorophyll a present, the more algae present. This can be a result of higher nitrogen and phosphorus and may result in lowered dissolved oxygen if algal blooms develop.

Explanation:

"Eutrophication" is the enrichment of surface waters with nutrients for plants, both nitrogen and phosphorus contribute to eutrophication.

A lake with total concentrations of phosphorus and chlorophyll-a of 10 and 2.5 mg / m3 respectively, can be classified into different eutrophication classes.  

The symptoms and effects of eutrophication are as follows:

· Increased production and biomass of phytoplankton, associated algae and macrophytes.

· Production of toxins by certain algae.

· Deoxygenation of water, especially at the end of algal growth situations.

The answer is:B) The more chlorophyll a present, the more algae present. This can be a result of higher nitrogen and phosphorus and may result in lowered dissolved oxygen if algal blooms develop.

Answer:

b

Explanation:

The more chlorophyll a present, the more algae present. This can be a result of higher nitrogen and phosphorus and may result in lowered dissolved oxygen if algal blooms develops. periodt pooh

Which describes the crust where the yellow areas of the two circles are falling? A.
spreading center







B.
divergent plate boundary







C.
convergent plate boundary







D.
transform plate boundary

Answers

This is a tricky one, Judging by what you asked me I looked up all of the meanings for those plate movements, Transform is when they move past eachother in opposite directions on their sides, Convergent plate movement is when two plates are moving towards eachother and one goes above the other one, pushing the other one down. Divergent is where magma push up the 2 plates pushing them apart but instead of sinking they are lifted up. The most logical answer I would say is Spreading center because when the two plates spread, both of the plates sink.  

How do the chromosomes at the end of meiosis 1 compare with the chromosomes at the end of meiosis 2

Answers

Chromosomes have two chromatids at the end of meiosis I and one chromatid at the end of meiosis II. The correct option is D.

What is meiosis?

The division of gametic or sex cells is known as meiosis. The process of reproduction involves this. It takes eight phases to finish. It is split into two sections. The first and second meiosis.

When a cell is dividing, it is a haploid cell. One set of chromosomes makes up a haploid cell. It includes all of its chromosomes during meiosis. Chromosomes are hereditary material.

In the chromosomes in meiosis 1 a full set of chromosomes is present and in meiosis 2, the number is diploid (2N).

Therefore, the correct option is D,Chromosomes have two chromatids at the end of meiosis I and one chromatid at the end of meiosis II.

To learn more about meiosis, refer to the link:

brainly.com/question/25162715

#SPJ2

The question is incomplete. Your most probably complete question is given below:

Chromosomes have one chromatid at the end of both meiosis I and meiosis II

Chromosomes have two chromatids at the end of both meioses I and meiosis II.

Chromosomes have one chromatid at the end of meiosis I and two chromatids at the end of meiosis II.

Chromosomes have two chromatids at the end of meiosis I and one chromatid at the end of meiosis II.
At the end of telophase 1, there are 43 pairs of chromosomes. At the end of telophase 2, there are 23 chromatids in each gamete.

How can underground caverns turn into lakes?

Answers

the top of the cavern will slowly weather away from acid rain, water or rocks pounding on it
The Underground Lake is a moderately sized, active gypsum cave formed by partial collapse of a major dissolution cell. >> That's how from what I remember. 

when a grasshopper eats grass only some of the energy from the grass is stored in the Grasshoppers body how does the grasshopper use the rest of the energy

Answers

Answer:

The rest of the energy from grasshopper will be transferred to the next trophic level in the food chain with in the ecosystem.

Explanation:

All the organisms with in an ecosystem are part of some food chain. Hence when ever an organism feed upon some other organism/plant to get energy , retains some part of it and  transfers the rest of energy to the next trophic level.

Usually in a food  chain, all organisms retain 10% of the energy they get from the preceding trophic level and transfers 90% of the energy to the next trophic level.

Thus, whichever organism feed on grasshopper or depend for food on grasshopper in some or the other way will get the rest of the energy.
Energy must constantly flow through an ecosystem for the system to remain stable. it means that organisms must eat other organisms
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