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2 years ago

1. What are three characteristics of a young river?

2 answers:

4 0

Answer: Young rivers are channels that are deeper than they are wide, have a very fast flow, and contain frequent waterfalls and rapids

Charra [1.4K]2 years ago

3 0

Answer
1- Young rivers are channels that are deeper than they are wide, have a very fast flow, and contain frequent waterfalls and rapids
2- Ridges are sharp, valleys are steep sided, and the landscape has maximum relief. Old age. The valley walls wear down, the river creates a broad flood plain, and begins to meander, or develop wide bends.

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What is the function of the optic chiasm?

erastovalidia [21]

It helps with the optic nerve, if you give me options i can help answer. Sorry if I didnt help :)

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3 years ago

Describe a feedback loop?

satela [25.4K]

Answer:

A feedback loop is a biological occurrence where the output of a system amplifies the system (positive feedback) or inhibits the system (negative feedback).

Explanation:

Example, during blood clotting, a cascade of enzymic proteins acitvates each other, leading to the formation of fibrin clot that prevents further blood loss.

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3 years ago

What is found in group 1 and 4 on the Periodic table

Mazyrski [523]

Answer:

Group 1 - Alkali metals; Group 4 - Elemental Properties

Explanation:

The elements in Group 1 are called Alkali metals and those are: Lithium, Potassium, Rubidium, Celsium, Francium and Sodium and the elements in Group 4 are called: Titanium, Hafnium, Zirconium and Rutherfoundium.

It's important that group 4 has no trivial name like the group 1 does, it belongs to the grouping of transition metals and those metals have several general properties. They are found in the middle of the periodic table.

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3 years ago

) Consider a pea plant- it has a gene controlling seed color- yellow Vs green; another gene controlling seed texture-smooth Vs w

lana [24]

Answer:

Yellow smooth - 9

Yellow wrinkle - 3

Green smooth- 3

Green Wrinkle - 1

Explanation:

Let the green color of the seed be depicted by "G" and the yellow color of the seed be depicted by "g"

Let the smooth the seed be depicted by "R" and wrinkled seed be depicted by "r"

F1 cross -

true breeding smooth green plant ( RRGG) and true breeding wrinkled yellow (rrgg)

F1 gamete will be RG, RG, rg, rg

F1 offspring will be RrGg , Thus all F1 offspring will be heterozygous smooth and yellow.

Thus, R is dominant over r and g is dominant over G

F2 Generation –

RrGg x RrGg

Gametes will be RG, Rg, rG, rg

RG Rg rG rg

RG RRGG RRGg RrGG RrGg

Rg RRGg RRgg RrGg Rrgg

rG RrGG RrGg rrGG rrGg

rg RrGg Rrgg rrGg rrgg

R is dominant over r and g is dominant over G

Genotypes are –

RRGG - 1 (Smooth Green)

RRGg-2 (Smooth yellow)

RrGG-2 (Smooth Green)

RrGg-4 (Smooth yellow)

RRgg- 1 (smooth yellow)

Rrgg – 2 (Smooth yellow)

rrGG – 1 (wrinkled Green)

rrGg – 2 (Wrinkled yellow)

rrgg – 1 (wrinkled yellow)

Yellow smooth - 9

Yellow wrinkle - 3

Green smooth- 3

Green Wrinkle - 1

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2 years ago

The earth is surrounded by a _______________________ of gases called the ________________. The atmosphere is very ______________

deff fn [24]

The earth is surrounded by a layer of gases called the atmosphere. The atmosphere is very important to life on Earth and does many things to help protect life and help life to survive.

The atmosphere absorbs the heat from the Sun and keeps the heat inside the atmosphere helping the Earth to stay warm, called the Greenhouse Effect.

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3 years ago