b. grass
c. bluebird
d. rabbit
Answer:
liquid, with an average density of approximately 11 g/cm3
Explanation:
The outer core of the Earth is inferred to be a liquid layer composed of iron, nickel, and sulfur, compressed to a high density. It's responsible for generating Earth's magnetic field due to the circulation of the liquid metal inside. Notably, its diameter makes it larger than the planet Mercury.
The outer core of Earth is inferred to be a dense, metallic layer, over 2900 kilometers beneath the Earth's surface. It's chiefly composed of iron, nickel, and sulfur, compressed to a very high density. Quite fascinatingly, the outer core, unlike the solid inner core, is liquid.
This liquid state facilitates the circulation of metallic elements within it, helping generate Earth's magnetic field. As the liquid metal inside Earth moves, it sets up a circulating electric current, which subsequently produces a magnetic field.
For size perspective, it's worth noting that with a diameter of approximately 7000 kilometers, Earth's core is larger than the planet Mercury. This fascinating core, and particularly its outer liquid layer, provides key insights into understanding not only earth's geodynamic movements but also the formation of its protective magnetosphere.
#SPJ6
Phototropism benefits plants by allowing them to grow towards a light source, maximizing their exposure to sunlight for photosynthesis.
Phototropism is light-induced plant growth. It helps plants adapt in several ways. First, phototropism helps plants maximise sunshine exposure, which is essential for photosynthesis. Plants can maximise light absorption and photosynthetic efficiency by bending or growing towards light.
Phototropism aids plant light competition. Plants compete for light in dense vegetation or woods. Plants can maximise sunlight and minimise shadowing from neighbouring plants by growing towards light.
Phototropism helps plants maximise light energy use, growth, and survival in their ecological niche.
Learn more about Phototropism, here:
#SPJ2
Answer:The correct option is C) Cell walls are rigid. Small molecules like water or oxygen can pass through them.
Explanation:
Cell walls are found in plant cells and some other organisms. They provide structural support and protection to the cell. The cell wall is made up of a rigid material called cellulose, which gives it its strength.
Cell walls are permeable, meaning that they allow certain substances to pass through them. Small molecules like water and oxygen can pass through the cell wall via small pores or channels. However, larger molecules, such as proteins and carbohydrates, cannot pass through the cell wall.
This selective permeability of the cell wall allows the cell to control the movement of substances in and out of the cell, maintaining its internal environment. It also helps prevent the cell from bursting under osmotic pressure.
In summary, cell walls are rigid structures composed of cellulose. They are permeable, allowing small molecules like water and oxygen to pass through, while blocking larger molecules.
bone structure of an organism
the type of hair animals had
the type of teeth an animal had