Why bacteria in the soil. are necessary in this ecosystem 8th Grade Science

Answers

Answer 1

Answer: There could be a lot of reasons. To help break down food for the plants, kill off bad and harmful things that might damage the plant.

Answer 2

Answer: Bacteria are important in the soil to maintain the nitrogen cycle. Certain type of bacterais help in nitrogen fixation. They also decompose dead and decaying matter into nitrogen compounds such as ammonia. The nitrogen and nitrogenous compounds in turm help the plant to grow.

When the plant dies, the bacteria again decomposes it into nitrogenous compounds. Not only plants, but also animals. The nitrogen then passes through various stages and then gets back to atmospheric nitrogen. Bacteria is an important part of this nitrogen cycle.

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A synapomorphy is another term for homologous trait (a trait shared from a common ancestry) which ALL the descendants share. Which of the following are synapomorphies in Kingdom Plante? (Select all that apply) A. Membrane-bound Nuclei
B. Multicellularity
C. Cell walls made from sugars
D. Autotrophy
E. Motility (ability of locomotion)
F. Heterotrophy

Answers

Answer:

Multicellularity

Autotrophy

Membrane-bound Nuclei

Explanation:

This kingdom of plantae comprises of the more familiar green plants. They are multicellular organisms which contain the green light-trapping pigment called chlorophyll. They make their own food from carbon dioxide, water and mineral salts using sunlight energy, a process called photosynthesis. Thus plants are said to autotrophic.

A Hertzsprung-Russell diagram is provided.In comparison to the Sun, which of the following best describes Betelgeuse?
Group of answer choices

Smaller in diameter

Cooler and brighter

Brighter and hotter

Less bright, but hotter

Answers

Less bright but hotter

What are the 3 principles of heredity that Gregor Mendel discovered?

Answers

Based on the information shared by the experiments of Gregor Mendel, the statement “traits are passed from parents to offspring independently of one another” is actually a theory and not a hypothesis or observation. It cannot be a hypothesis as it is already tested and proved. Hypothesis is something that has not been proved. An observation is something that has been observed, but never proved. Gregor Mendes proved this theory or hypothesis in the laboratory and so it is surely a theory.

According to the theory of plate tectonics, Earth’s surface is composed of many sections of crust and solid upper mantle. Forces within the Earth cause the sections, or plates, to move. Some of the plates converge while others diverge. Name two geological events that are associated with this type of activity.PLEASE HELP!!

Answers

The West Coast of South America is a convergent boundary between the Nazca Plate and the South American Plate.

The Arabian plate is running up on the Eurasian plate.

Which project came first: Gemini, Space Shuttle, Mercury, Apollo?

Answers

Their sequence was:

1). Mercury
(one astronaut in the capsule, in Earth orbit)

2). Gemini
(two astronauts in the capsule, in Earth orbit)

3). Apollo
(three astronauts in the capsule, in Earth orbit, then to the Moon)

4). Space Shuttle
(crew of six, in Earth orbit; carried other satellites and put them into orbit;
carried the Hubble Space Telescope and put it into orbit;
carried materials and began construction of the International Space Station;
ferried astronauts and supplies to and from the ISS.)

Water molecules are attracted to the molecules in the wall of the glass container

Answers

adhesion water sticking to a foreign substance. cohesion is water sticking to itself.

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Which part of the eye helps focus light rays on the retina?A.lensB.pupilC.scleraD.iris

In the figure above, which letter represents the neritic zone?

This phrase, found in Darwin's origin of Species, suggest that species adapt natural