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Mamont248 [21]
3 years ago
10

What is a patent ductus arteriosus? identify two (2) clinical manifestations of patent ductus arteriosus (pda). ati?

Biology
1 answer:
Novay_Z [31]3 years ago
8 0
Patent ductus arteriosus occurs when the normal fetal circulation conduit between the pulmonary artery and the aorta fails to close and results in increased pulmonary blood flow. The clinical manifestations of patent ductus arteriosus include; Murmur; wide and bounding pulse pressure, Asymptomatic Heart failure. 
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The energy pyramid below illustrates some feeding relationships in alpine meadows of Yellowstone National Park. Which statement
Anettt [7]

Answer:

The answer is - Biomass decreases as energy is transferred from one level to another.

Explanation:

The options are;

A. Chipmunks and insects can occupy the same niche.

B. As the number of bears in this community increases, the number of chipmunks will increase.

C. Insects are classified as omnivores in alpine meadow communities.

D. Biomass decreases as energy is transferred from one level to another

The answer is D. Biomass decreases as energy is transferred from one level to another

The energy pyramid being referred to is in the attachment below.

Biomass is an organic renewable source of energy derived from plants and animals. As animals at the lower trophic levels are consumed by animals at the higher trophic levels there is transfer of energy, however it is not all the energy that are transferred equally. As a result, at each trophic level there is decreased energy and biomass that is transferred from one level to the other.

3 0
3 years ago
. How many cotyledons would be found in a flowering plant with nine petals on each flower and long leaves with parallel leaf vei
ale4655 [162]
Theres monocotyledons and dicotyledons. (1 and 2 cots)
the answer should be monocotyledons, we can see that through the leaves and the petals. monocotyledons the petals r usually in the multiples of 3 or 6, and 9 petals is the multiple of 3. also, monocots leaves r usually in parallel leaf veins, so your plant is monocotyledons, which means one.

just in addition, dicots petals r in multiples of 4 or 5, and their leaves r usually in branched veins
4 0
3 years ago
Which of the following would be found in all prokaryotic and eukaryotic cells?
jeyben [28]

Answer:

Plasma membrane, ribosomes, cytoplasm, DNA

Explanation:

7 0
3 years ago
Greenhouse gases absorb radiation from the and re-radiate it back toward the
Flauer [41]

Answer:

Greenhouse gases absorb radiation from the EARTH and reradiate back toward the EARTHwhich help to maintain a normal temperature range in the Earth.

Explanation:

Greenhouse gases are gases that are capable to of absorbing infrared radiations that are emitted from the Earth's surface and reradiating back to the Earth which contributed to the greenhouse effects. Examples of greenhouse gases are carbondioxide, methane and water vapour. Others are ozones, flourinated gases, nitrous oxides e.t.c.

The green house gases has lead to climate changes in the Earth by trapping heat, the contribute to respiratory diseases by smog and air pollution. Greenhouse gases concentrations are high during warm seasons and low during cold seasons.

7 0
3 years ago
Blood flow in the capillaries is
yaroslaw [1]

Answer:

A

Explanation:

Blow flow in the capillaries is slowest despite the large surface area. This is to allow for exchange of gases and nutrients at the cellular level.

3 0
3 years ago
Read 2 more answers
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