Which best explains how a blond-haired child can be born to two parents with black

Skin cells reproduce once every day. Liver cells reproduce once every year. Why do you think skin cells reproduce more often?

Artyom0805 [142]

Skins cell reproduce more because let’s say for example you get hurt and the skin falls off in order to protect you it grows back immediately

3 0

2 years ago

Read 2 more answers

The model illustrates a process by which a substance is taken up by a cell. Which statements describe the process? Select the co

postnew [5]

Answer:

The process shown in the model requires energy from the cell.

Explanation:

Active transport refers to the movement of materials across the cell membrane against concentration gradient.

The cell membrane remains intact. However, energy is required from within the cell to move materials into the cell against concentration gradient, hence the answer.

4 0

3 years ago

• nitrogen-fixing • producer • biosphere • consumer • biotic factor • heat • condensation • parasitism • commensalism • neritic

Katarina [22]

Nitrogen-fixing bacteria carry out the conversion of gaseous nitrogen to a biologically useful form of nitrogen
An energy pyramid illustrates that energy in the form of heat is lost to the surroundings as it is passed from one organism to the next
The energy role of a grizzly bear is that of a consumer because it cannot make its own food
Decomposers cycle nutrients from dead organisms back to the soil, where it becomes available for plants
The Savanna biome is characterized by its lack of trees, warm temperatures, and moderate rainfall

Explanation:

The nitrogen-fixing bacteria like Azotobacter which lives in symbiotic relationship in the rhizomes of leguminous plants. They convert inorganic atmospheric nitrogen gas through the action of its enzymes like nitrogenase to organic nitrogen in the form of ammonia, which is readily assimilated by the plants.
In an ecosystem, at each tropic level of an energy pyramid, only 10% of energy is utilized and transferred to the next higher tropic level whereas the majority of energy is dissipated as heat during various metabolic processes.
Decomposers also called saprophytes like earthworms, bacteria, fungi survives on dead and decayed remains of plants and animals and also on fertilizers, pesticides etc in the soil. They recycle the nutrients by breaking down the complex biomolecules into simpler forms and release back into the soil.
Grizzly bears being omnivores eat both plants and animals according to their availability. Hence they are both primary and secondary consumers.
Savanna is a grassland biome with a typical tropical wet and dry climate and receives moderate rainfall. Hence it cannot support trees but only have grasses.

6 0

3 years ago

What traditional christmas decoration is actually a parasitic plant?

laiz [17]

Answer:

Mistletoes

Explanation:

4 0

3 years ago

Considering the carbon cycle, which of the choices would result if a large area of forest were burned?

baherus [9]

Fossil fuels represent carbon storage areas. Carbon that is locked in these fossil fuels does not cycle through the Earth. When humans burn fossil fuels, the stored carbon is released into the atmosphere as carbon dioxide. The carbon is then free to cycle through the Earth and can upset the natural balance of the carbon available, changing the way that processes occur on Earth.

4 0

3 years ago