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OLEGan [10]
3 years ago
15

Astronomers believe that the _____ the star, the _____ its lifespan.

Biology
1 answer:
arsen [322]3 years ago
3 0

Answer:

Astronomers believe that the larger the star, the shorter its lifespan.

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Describe how and why organisms are hierarchically classified and based on evolutionary relationships
sergeinik [125]
A. The scientific theory of evolution is the fundamental concept underlying all of biology.
B. The scientific theory revolution is supported by multiple forms of scientific evidence.
C. Organisms are classified based on their evolutionary history. 
D. Natural selection is a primary mechanism leading to evolutionary change.
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What was the protein that was found in mouse urine that might inhibit blood vessel growth in people? *
Aleks [24]

Answer: Angiogenisis

Explanation:

3 0
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Process of fertilized eggs
Musya8 [376]

Answer:

Explanation:

Fertilization occurs when the nucleus of both a sperm and an egg fuse to form a diploid cell, known as zygote. The successful fusion of gametes forms a new organism.

5 0
3 years ago
A certain species of butterfly varies in color from white to dark blue. The birds found in the same area feed on the white or li
frutty [35]

Answer:

(c) directional selection

Explanation:

Directional selection is a type of natural selection that occurs when members of a population of a species with a particular extreme phenotype is selected or favored against the other phenotypes when natural forces act on the population of a species. Individuals having the particular traits that are favored survive and become more common that others with traits that are less favored.

Directional selection may likely result in the species of butterflies in which darkly collared butterflies are not preyed upon, ensuring their survival, while the other butterflies with other colors will be phased out with time. Darkly colored butterfly will be selected for while the others will be selected against.

7 0
3 years ago
A marked decrease in brain processing and memory in some older adults is MOST likely caused by: A. inadequate control processes.
Andru [333]

Answer:

Option-B

Explanation:

The brain is an organ composed of neurons which controls all the voluntary and involuntary of animals.  In humans, the brain is located in the skull where the brain is suspended in a fluid called cerebrospinal fluid.

As humans ages and becomes old aged, the neurons in the brain losing their ability to perform their function, if they are lost they cannot be regenerated.

The lesions appear on the white matter of the brain and the brain shrink. Due to these known and other unknown features, the process controlled by these neurons become inadequate and shows slower brain processing and weak memory.

Thus, Option-B is the correct answer.

6 0
3 years ago
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