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melomori [17]
3 years ago
9

What evidence do scientists have that electrons can move move from one energy level to another?

Biology
1 answer:
S_A_V [24]3 years ago
4 0

Light. When an electron falls to a lower orbit it gives off energy as a photon. Spectral lines give evidence of electrons moving from one energy level to another within the atom.

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2. In polar regions, phytoplankton.
natka813 [3]

Answer:

b. thrive during the summer, when sunlight increases

Explanation:

Phytoplankton production is highly associated with latitude and season. In polar regions, phytoplankton production is reduced to the summer (and eventually spring) season. In consequence, the zooplankton that eats phytoplankton only can survive during the spring and summer seasons. On the other hand, in tropical areas, there exists a nearly constant phytoplankton production all year round.  

6 0
3 years ago
Why is a house warmer on the top floor and colder in the basement
topjm [15]
Because warm air rises up so it's warmer on the top floor. 
7 0
4 years ago
Read 2 more answers
Help please 20 points i mark u as brainlist
Artyom0805 [142]

Answer:

a. Mastication process and formation of bolus in the oral cavity

b. The contraction in the stomach breaks the food down into smaller pieces. These pieces are then moved to the small intestine.

c. In the small intestine, food particles are broken down into nutrients, fat, protein and carbohydrates which are absorbed into the bloodstream.

Explanation:

a. First step of digestive system functioning is the mastication process and formation of bolus in the oral cavity.

b. The contraction in stomach, with the help of digestive enzymes and acids, break the food down into smaller pieces. The small pieces of food are then released into the first part of the small intestine (duodenum).

c. In the small intestine, two enzymes released from pancreas and gall bladder break down the food particles into fats, proteins, and carbohydrates. Thereon, nutrients and carbohydrates, proteins and fats are absorbed into the bloodstream.

5 0
3 years ago
Name some of the traits mendel studied with his pea plants.
Scorpion4ik [409]
Gregor Mendel was an important scientist, considered to be the founder of the science of genetics. His experiments on the crossbreeding of plants and the passing down of favourable traits, led him to establish the laws of Mendelian inheritance. He was using pea plants for his experiments and he was studying seven different pea traits: pea shape and color, pod shape and color, flower color, plant size and position of flowers.

7 0
3 years ago
¿cual es la institución responsable de velar por la conservación del medio ambiente?
BaLLatris [955]

Answer:

La institucion se llama Ministerio de Medio Ambiente y Recursos Naturales.

Explanation:

7 0
3 years ago
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