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slega [8]
2 years ago
13

A student is constructing a model to illustrate the levels of organization for life on Earth.

Biology
1 answer:
Lisa [10]2 years ago
7 0

Answer:

1: Population; 2: Biome;3: Ecosystem

Explanation:

Population refers to the number of people in a state. Biome is a large area characterised by it's vegetation, soil,climate, and wildlife. Ecosystem is a geographic area where plants, animals and other organisms exists

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Which is not a kingdom in the Eukarya domain?
omeli [17]
D. Bacteria because “bacteria” is actually a domain itself
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3 years ago
Why do greenstick fractures commonly occur in children? Their bones contain higher amounts of collagen. Their bones contain high
Alisiya [41]

Answer:

This traumatic pathology occurs in children because the concentration of minerals is lower in children, since these have a greater collagen fibrillar organic structure, which is what gives children greater elasticity during bone growth until the areas close. proliferative.

The denomination in green stem comes from the analogy between this type of fracture and the one that occurs when trying to break the green stem of a plant.

It is characterized by being an incomplete fracture, with rupture of the periosteum and cortical bone on the convex side of the bone, while in the concave area the periosteum does not break, as a consequence the bone is not completely broken (incomplete fracture), but the fragments move and present an angulation of variable amplitude that needs to be corrected

Explanation:

To be more specific, these fractures occur more up to ten years of age, according to some research.

The centers of bone proliferation and differentiation where osteochondral mineralization of long bones occurs is what confers greater flexibility and greater organic content in the long bones of children.

8 0
3 years ago
Why does photosynthesis require water? a. because water provides oxygen atoms. b. because water provides electrons . c. because
katovenus [111]

Answer:

The correct answer would be b. because water provides electrons.

During the light reaction of the photosynthesis, the water is photolysed into high energy electrons, hydrogen ions, and oxygen.

The overall reaction can be written as:

2 H₂O + sunlight → 4 H⁺ + 4 e⁻ + O₂

It takes in water-splitting complex associated with photo-system II rooted in the thylakoid membrane of chloroplast.

The oxygen is released as the byproduct of photosynthesis.

The hydrogen ions help in the formation chemiosmotic potential across the thyllakoid membrane which help in the formation of ATP (adenosine triphosphate).

The electrons are used to replace the electrons lost from chlorophyll a of reaction centre associated with photo-system II. The electrons are lost due to the photo-excitation of chlorophyll a.

The electrons lost from chlorophyll a help in the production of ATP and are used to reduce NADP⁺ into NADPH.

The ATP and NADPH are used in light-independent reaction of the photosynthesis to produce glucose or food.

4 0
3 years ago
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Ann [662]
It is the 1st one because it looks right
6 0
2 years ago
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A scientist traversing a remote wooded area discovers what he thinks is a new plant species. He makes observations of the plant,
Rashid [163]

b. Angiosperm

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Acorn is the fruit of oak tree. It is a nut and bears only one seed.

Since the scientist finds that the fruit produced on the tree is a nut then it is obviously an angiosperm because:

The only groups of seeded plant are Gymnosperms and Angiosperms.

Gymnosperms produce cones and have naked seed.

The seed produced within a fruit is a characteristic of angiosperm.

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