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kicyunya [14]
3 years ago
11

North American Red-winged blackbirds (Agelaius phoeniceus) males arrive at cattail marshes before females each spring. They acti

vely defend areas of the marsh as individual territories. Females choose a territory (and its male) as a place to breed and build a nest. If a male has a high-quality territory, he can form pair bonds with multiple females. Nests are vulnerable to attack from raccoons and other animals. Predation of the eggs and nestlings has a serious impact on reproductive success. Nests that are concealed among the cattails and suspended over water are less vulnerable to predation. Which type of mating system do Red-winged blackbirds have?
Biology
1 answer:
Elina [12.6K]3 years ago
8 0

Answer:

The mating system Red-winged blackbirds have is Territorial Polygyny

Explanation:

Males Red-winged blackbirds arrive before females, select nesting places and defend the territory where 5 to 15 females can establish nesting areas.

Males attract females for nesting by vocalizations and postures, and also having large territories with enough resources for living.

Females accepts the male and his territory and then starts building the nest.

On this type of polygyny, the association between the male and several females occurs on the male`s territory.

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4 0
3 years ago
What is the defining abiotic factor of deserts
finlep [7]
<span> sunlight, little water, air, rock these are some :)</span>
8 0
3 years ago
Which term describes stacks of thylakoids?
Mumz [18]
Grana is the term that describes stacks of thylakoids. 
7 0
3 years ago
In which location would the rate of soil erosion most likely be higher than the rate of soil formation?
Over [174]

The question is <u>incomplete,</u> options are given below:

A. A tropical area with moderate rainfall

B. A temperate forest

C. A steep slope

D. A river delta

Answer:

<em>C.</em><em> A steep slope</em>

Explanation:

Erosion is a <u>weathering process</u> that causes removal of the top layer of sediments from any geological material (rock, plain area, etc) and then transports that material to another place. This process is governed by the combined action of wind, water (precipitation), gravity, and other meteorological parameters.

For this question, four options are given among which rate of erosion would be faster than the rate of soil formation for a steep slope. For a steep slope, the movement of water and wind would be stronger along with high gravitational pull as compared to the tropical area, river delta, and temperate forest. In principle, in the temperate forest, the erosion would be lowest due to the presence of plant roots that support the soil material to stay aggregated and resist against weathering.

8 0
3 years ago
Which circuit carries blood from the right ventricle to the lungs for gas exchange and returns it to the left atrium of the hear
ElenaW [278]

Answer:

Pulmonary circuit

Explanation:

Pulmonary circuit of blood circulation serves to carry the deoxygenated blood from the right ventricle of the heart to the lungs and then returns the oxygenated blood from the lungs to the left atrium of the heart. The pulmonary trunk carries the deoxygenated blood from the right ventricle to the lungs.

The right pulmonary artery and the left pulmonary artery of the pulmonary trunk carry the blood to the right and left lung respectively. After the gaseous exchange, the pulmonary capillaries unite to form venules and finally the pulmonary veins which in turn carry the oxygenated blood to the left atrium.

8 0
3 years ago
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