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Kazeer [188]
3 years ago
6

Why do leaves appear green?

Biology
2 answers:
Zina [86]3 years ago
5 0
Leaves are green because they contain chlorophyll, an agent that reacts with sunlight and allows plants to undergo photosynthesis, the process that allows plants to make food.
Hope that helped =)
erica [24]3 years ago
4 0
The chlorophyll (a substance inside the plant) makes it green
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4. How might Douglass' reliability as an author be called into question for his piece Narrative of the Life of Frederick Douglas
Yuki888 [10]
It might be stated that his reliability might be compromised because he writes the story many years later and his memories may be skewed. he is the narrator and the protagonist of the story and it is written in first person so  he retells what he remembers from his life experience since he was a child.
8 0
3 years ago
Which directional terms best describe the location of the sternum in relation to the vertebral column? in the axial region of th
liraira [26]

Answer:

Anterior

Explanation:

In anatomical terminology there are several words to indicate the position or part of the body that is being mentioned in a more specific and precise way, a group of these terms are called directional terms, they focus on the position of a specific part, one of the words in this group is "anterior" it basically means "in front of". The sternum is in front of the vertebral column.

3 0
3 years ago
Read 2 more answers
Pls help with me who is good in science!!!​
mestny [16]

Question 1.

Detrital or Classic are 2 rocks that weather and become sandstone.

Question 2.

Metamorphic and Ingenious Rock is called a Migmatite.

Question 3.

There are three types of rocks in this one. Rhyolite, Pumice, and Basalt.

Question 4.

Energy and Heat from the Sun cause the Matter to start cycling and the Process of Wheatheing Begins.

Question 5.

The Earth's internal heat produces things such as melting, crystallization, and deformations to some rocks.

(Here are the answers I know and managed to gather over some time hope you get it all correct even if I'm wrong in some good luck and take care)

5 0
2 years ago
A newborn baby dies soon after birth because her diaphragm and rib cage muscles failed to contract and she was unable to breathe
kozerog [31]

Answer:

Troponin

Explanation:

This is a complex of three proteins  (Trop C, I, T) that are responsible for muscle contraction of  the skeletal and cardiac  muscles . its binds with protein tropomysin  to lie in the grove between the actin filaments.  its prevents contraction by blocking  myosin crossbridge  in a relax muscles.Inorder to aid contractions  calcium ions binds with troponin, which leads to confrontational change.This exposes myosin on actin filaments,  leading to formation of crossbridge and therefore contraction of muscles.

Therefore if there is  a mutation in the gene that encoded Troponin, as explained above, calcium ion  will not be able to bind with tropinin, and there will be no exposure of myosin on actin filaments, no binding of  myosin on actin to cause crossbridge, and consequently no  muscle contraction,

Thus the intercoastal  muscle and diaphragm will not contract leading to death of the baby.

8 0
3 years ago
Read 2 more answers
the diagram below represents levels of glucose and insulin found within the bloodstream of a healthy person
Makovka662 [10]
The increase in insulin level following an increase in glucose level in the blood can best be explained by A FEED BACK MECHANISM THAT REGULATE THE BLOOD GLUCOSE LEVEL.
Insulin is an hormone that is secreted by the pancreas and it functions by regulating the amount of glucose that is found in the blood. When the level of glucose in the blood is higher than normal, insulin interfere by converting the excess glucose into glycogen. The glycogen is stored in the liver and in the skeletal muscles and they will only be converted back into glucose, if the level of glucose in the blood is lower than normal.
6 0
3 years ago
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