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vodka [1.7K]
3 years ago
8

I’m just a little confused can someone explain ?

Biology
2 answers:
Juli2301 [7.4K]3 years ago
8 0
Noooooooooooooooooooooooooooooo
Airida [17]3 years ago
5 0

Basically, there is a presentation of types of food and the amount of those foods over 50 years in this graph. This means the graph is showing amounts of certain foods over the time period. I'm guessing that basing off of the the previous text you're just noting a change in the breaks of birds based off of the diet available to them at certain times. The adaptations and natural selection will explain the changes because due to certain limited and available foods the diet of the birds change.

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Blood cells are _____ in shape because they lack a nucleus.
sesenic [268]


Red blood cells are disc shaped. It is thought one factor that allows them to have this shape is because they do not have a nucleus. This tends to increase amount of space inside the cell for hemoglobin.

They have a flexible disc shape which helps increase the surface- to- area volume ratio  which enables oxygen and carbon dioxide to diffuse across the red blood cell's plasma membrane more readily.

Their disc shape also enables them to squeeze through tiny capillaries that are half their size .


8 0
3 years ago
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Imagine that a researcher has dissected out a single muscle bundle from a triceps muscle biopsy. She sections this bundle and st
muminat
<h2>Tropomyosin</h2>

Explanation:

This protein is most likely:  Tropomyosin.

Sacromere is the structural unit of myofibrils i.e. the fibres of the muscles.

Tropomyosin is the muscle protein that function in contraction of muscle filaments.They are arranged laterally along the myofilament. When the researcher is observing the sacromere, she is observing the muscle fibre.  So, the protein that lines the periphery along the thin filament is more likely to be tropomysin.

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3 years ago
How does the respiratory system affect the cardiovascular system
Anit [1.1K]

Blood is the fuel that keeps you going! Oxygenated blood is brought to organs and tissues via the arteries, while veins bring deoxygenated blood back to the heart to be replenished. The point is, without the respiratory system your blood would be useless.

The circulatory and respiratory systems work together to circulate blood and oxygen throughout the body. Air moves in and out of the lungs through the trachea, bronchi, and bronchioles. Blood moves in and out of the lungs through the pulmonary arteries and veins that connect to the heart.


3 0
3 years ago
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hi i need a definition of adaptation, camouflage, habitat, hibernation, migration, mimicry, niche, predator, prey, reproduction,
gladu [14]

Answer:

species is a group of organisms of common ancestry able to reproduce only among. reproduction is Formation of new cells or a new individual. adaptation is A changing to fit new conditions. niche is ecology) the status of an organism within its environment and community (affecting its survival as a species). camouflage is camouflage. mimicry is Gaining protection by looking and acting like a different species. migration is Form of relocation diffusion involving permanent move to a new location. hibernation is A state of extremely low metabolism and respiration, accompanied by lower-than-normal body temperatures. predator is An animal that hunts other animals for food. prey is Animal hunted or caught for food. habitat is Place where an organism lives. organism is any living thing made up of one or more cells. invasive species is plants and animals that have migrated to places where they are not native. last non native species is not from an area, usually harmful.

Explanation:

5 0
3 years ago
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Which of the following statements are Lamarck's ideas? Choose the two statements that apply.
Mashutka [201]

Answer:

answer is E the theory of inherintance

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