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lord [1]
3 years ago
5

Before Darwin published his work, Lamarck and others had suggested mechanisms for evolution. By what means did Darwin propose sp

ecies evolved over time?
Biology
1 answer:
Citrus2011 [14]3 years ago
6 0
Overproduction of young passing on acquired traits survival of the strongest natural selection
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The cells of a plant help the plant maintain its life functions. What part of a plant cell has the function of producing sugar i
Svetllana [295]

Answer:

CHLOROPLAST

Explanation:

As stated in this question, plant cells are capable of producing their own food in form of sugar (glucose) using energy from sunlight in a process called PHOTOSYNTHESIS. Photosynthesis is the process by which green plants and other certain organisms synthesize their own food using light energy.

The ability to carry out this photosynthetic function is embedded in a structure found in plant cells called CHLOROPLAST. Chloroplast contains a pigment called CHLOROPHYLL, which captures light energy from the sun. Generally, the the function of producing sugar in the presence of sunlight (photosynthesis) occurs in the CHLOROPLAST.

4 0
2 years ago
Why does snakes and frog goes for winter sleep?plz help me fßi need it's and know​
pentagon [3]

Answer:

Explanation:

Snakes, like all reptiles, are cold-blooded (also known as ectothermic). This means they regulate their body temperature by lying in the sun to warm up, or moving into the shade to cool down. Snakes that live in cold climates like ours must seek refuge in a hibernaculum throughout the winter

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2 years ago
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Why were fruit flies a convenient organism for morgan to use for genetic experiments?
nevsk [136]
Fruit flies produce offspring relatively fast and have specific traits, such as eye color and body color/shape. They are easy to observe and their traits are easily traced throughout the next generations.
4 0
3 years ago
Offspring that are genetically identical to the parent are produced by ________ reproduction.
sweet-ann [11.9K]

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asexual

Explanation:

3 0
3 years ago
suggest and explain how the flow of blood in a person with patent ductus arteriosus differs from that of a person with a healthy
iren2701 [21]
Ductus Arteriosus is a blood vessel normally present in fetuses during development. The blood vessel is designed to bypass the pulmonary artery and brings blood to the Descending Aorta, as the fetus cannot breath through the lung (being as they are fluid filled). This is normally not a problem because oxygenated blood comes from the mother's blood supply.

Patent Ductus Arteriosus, is what happens when that vessel does not close. While not as dangerous as other congenital defects. However, because there is still a bypass, blood that normally need to be oxygenated by going through the pulmonary arteries to the lungs, can be diverted and placed into the blood stream without vital oxygen. This condition may eventually lead to CHF (congestive Heart Failure) and Pulmonary Hypertension if not treated.
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