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Alecsey [184]
4 years ago
7

During which era in earth's history were the first insects?

Biology
1 answer:
nordsb [41]4 years ago
6 0
According to the evolution theory, the first insects appeared about 400 million years BC in the Devonian Period. 
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Tropical rain forests receive heavy rainfall. How do the trees and plants of this region withstand rotting?
Lina20 [59]

Answer:

The trees and plant withstand rotting in tropical rain forest using some of these mechanisms.

Explanation:

Tropical rain forests are known for the presence of heavy rainfall, due to this, there might be a lot of water retention in the root. Some trees and plants however are able to store this water and use some of the below mentioned methods to prevent decay and rot.

Some trees in the tropical rain forest may produce very hard outer layer, these hard outer layer will protect the plant and trees form predators and microorganisms from penetrating into the inner tissues of the tree.

Some withstand rotting by producing chemical compounds, these chemical compounds prevents predators and microorganisms from destroying the plants and trees.

5 0
3 years ago
What would mostly likely happen if a person increased the amount of saturated
larisa86 [58]

The person's risk of cardiovascular disease would increase. Explanation: High LDL cholesterol raises your risk for heart disease and stroke

7 0
3 years ago
What is the function of RBC
avanturin [10]

Answer:

When a red blood cell is placed in a hypertonic solution, it contracts as water is drawn out of the cell and into the surrounding solution. If the same blood cell is placed in a hypotonic solution, the blood cell grows in size. Blood cells in isotonic solutions do not shrink or swell.

The reason that blood cells change in size when placed in a solution with different salt concentration is due to the osmosis process. Osmosis causes solutions with high concentrations of salt to draw water from areas with low concentrations of salt.

There are some exceptions to this phenomenon. Blood cells can draw water and explode when placed in hypertonic solution on some special occasions. Some diseases affect the structural integrity of blood cells. Also, when human blood cells are exposed to temperatures close to freezing, they can draw water and explode.

Osmosis is an important phenomenon for living systems. The amount of salt in a given solution exhibits a tendency to diffuse through the environment, eventually resulting in equilibrium. In addition to blood cells, the kidneys function through the use of osmotic principles. The kidneys filter an animal's blood to remove excess salt and balance the amount of water

7 0
3 years ago
Read 2 more answers
Can a virus metabolism
Alina [70]
Defects in transcription factors underlie some forms of cancer.
7 0
3 years ago
PLEASE HELPPP
Kamila [148]

Answer:

Maybe it's because the temperature was lower than the room temperature!?

8 0
3 years ago
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