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katen-ka-za [31]
3 years ago
10

In a species of bird, the males compete to try to fertilize the females. which trait would you expect these birds to have?

Biology
2 answers:
laiz [17]3 years ago
8 0

Answer:

Males that are much larger than females

Explanation:

apex

viktelen [127]3 years ago
4 0

The answer is D. Because the bird has to be noticed and the brighter the feathers the more likely the chance to be noticed.

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it is called excretion

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Which basic type of tissue makes up boundary of the stomach?
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The folds in the stomach lining are called rugae. On these rugae, you will find a thin line of mucous which helps protect the stomach lining. The innermost layer is called Simple Columnar Epithelium.
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3 years ago
What always occurs when energy moves from one trophic level to the next higher one?
DanielleElmas [232]

Answer:

The answer is D

Explanation:

Because as the energy travels from one animal to the other the energy decreases. For example a gazelle eats the grass right? And then a lion eats the eats the gazelle. The gazelle got energy from the grass it's body already used some so when it's eaten the lion only gets what energy the gazelle has leftover

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3 years ago
What are the smallest blood cells in the frog?
Tamiku [17]

Answer:

Unlike typical mammalian red blood cells, those from amphibians, such as frogs, contain a DNA-bearing nucleus that is visible in the center of the cell. The circulatory system of amphibians is rather unusual, their hearts having three chambers, two atria, and a single ventricle.

NegativePositive

Positive

The design of the amphibian circulatory system is curious because blood accumulates oxygen in the lungs and is then returned to the heart before being pumped into the rest of the circulatory system. Therefore, a mixing between oxygenated and deoxygenated blood occurs as blood returning to the heart from the lungs is mixed with incoming blood from the body. Frogs handle this situation by having a very slow metabolism and by absorbing some oxygen through their skin. In addition, the ventricle does have some directional control over the distribution of the blood.

Negative

The presence of a nucleus in amphibian red blood cells allows researchers easy access to large quantities of amphibian DNA. Frog blood has both a solid and a liquid portion. The liquid plasma carries solid elements such as red and white blood cells. Blood can be collected from frogs and the red blood cells isolated by centrifugation. After removal of the residual plasma, purified cells can be treated with specific enzymes and detergents to digest the cellular envelope and release DNA from its protein complex. The DNA is then useful for scientific studies and experiments.

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Explanation:

4 0
3 years ago
All forms of energy production and other resource extraction have associated _________ costs and risks as well as benefits.​
lakkis [162]

Answer:

The correct answer is - economic, social, environmental, and geopolitical

Explanation:

Natural Resources are the resources that are formed in nature on their own and can be renewable or non-renewable. There are various risks and benefits are associated with the production of all forms of energy other resource extraction.

These costs or risk includes economic, environmental, social, and geopolitical risks. These risks have various factors that decide if these risk or benefit and can be altered by the new technologies using for the extraction and production of various forms of energy.

3 0
3 years ago
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