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REY [17]
3 years ago
11

Complete the following sentences.

Biology
2 answers:
djyliett [7]3 years ago
7 0
1. The appearances of fireflies at dusk is an example of a circadian rhythm because it's happens daily. The correct option among all the options that are given in the question is the third option or option "c".

2. During migration, animals undertake a seasonal movement. The correct option among all the options that are given in the question is the first option or option "a".
DerKrebs [107]3 years ago
4 0

Answer:

1. Option C

2. Option A

Explanation:

1. A circadian rhythm is basically a cycle of processes (physiological, chemical, and behavioral) that repeats itself after every twenty four hours or in other word it occurs daily. Some of the common examples of circadian rhythm are -  

a) Cycle of sleep and wake

b) Cycle of food digestion etc.

The appearance of fireflies at dusk is an event that happens every day and hence it is a circadian rhythm.

2. Almost all the migrating animals migrate based on the season. For instance, birds migrating long distance are travelling to cope up with the seasonal changes. For instance, some of these birds breed in temperate or Arctic during the summer season and during autumn season they return back to the warm south regions

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Answer:

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Explanation:

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8 0
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balu736 [363]

c. Birth rates are high      

Explanation:

A wide base in the population pyramid shows that there is a large population of young people with high fertility rate or birth rate and high death rate.

From the graph, it can also be concluded that narrow tip at the top shows that lesser older people are in the population.

This pyramid shown in the diagram is a triangular age pyramid. In this type of pyramid the pre-reproductive individuals are high   reproductive individual are moderate and non-reproducing individual is less. In such pyramid we find population grows.

Suppose in a family of ten 6 are pre-reproductive, 2 moderate reproductive and 2 post-reproductive. We will see the in the course of moderate and post-reproductive will die and those six of pre-reproducing age will increase the population.

8 0
3 years ago
a. A breakdown of U.S. household garbage reveals the largest amount percentage-wise is paper and paperboard. b. In U.S. househol
Alex17521 [72]

Answer:

c. The founder of the modern environmental movement and author of Silent Spring is Rachel Carson

d. Deciduous trees such as most pines do not lose their leaves/foliage in winter.

Explanation:

Yes, Rachel Carson is the founder of the modern environmental movement as well as author of Silent Spring. She was an American marine biologist, author, and conservationist which started the modern environmental movement in order to save the environment form pollution. Yes, the Deciduous trees such as most pines do not lose their leaves/foliage in winter, they only lose those leaves that are too old. They are considered as evergreen plants.

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OverLord2011 [107]

Answer:

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Explanation:

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kogti [31]

The initial stage of atherosclerosis is characterized by accumulation beneath the endothelium of excessive amounts of ​LDL.

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To learn more about atherosclerosis.

brainly.com/question/1382544

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