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KiRa [710]
3 years ago
12

Why does there tend to be more life in the upper portions of aquatic ecosystems?

Biology
1 answer:
LuckyWell [14K]3 years ago
5 0

Answer: Air pollution causes or contributes to acidification of lakes, eutrophication of estuaries and coastal waters, and mercury bioaccumulation in aquatic food webs.

Explanation:

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Shtirlitz [24]

Answer: Number 2, aka Solid wastes on land.

Explanation: Bacteria in soil is a natural thing, so it's not polluting the earth. Oxygen in the atmosphere is letting us live, meaning it's not polluting the earth. Fish in rivers is also another natural thing, leaving us with solid wastes on land.

8 0
2 years ago
Which is the best definition of a phylogenetic tree?
Oliga [24]
The evolutionary history of a group of organisms especially as depicted in a family tree diagram showing the evolutionary interrelations of a group of organisms derived from a common ancestral form. The ancestor is in the tree “trunk”; organisms that have arisen from it are placed at the ends of tree “branches.” The distance of one group from the other groups indicates the degree of relationship; i.e., closely related groups are located on branches close to one another. Phylogenetic trees, although speculative, provide a convenient method for studying phylogenetic relationships.
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3 years ago
Which dimension of health involves placing the needs of others above your own?
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The answer to this question is  C. Spiritual health
The spiritual health dimension focused on doing all your actions based on the 'greater goods'. Completing this dimension will improve your wellness because it often gives your life a purpose/motivation that will give you more sense of fulfillment when you manage to finish your goals 
6 0
3 years ago
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15 POINTS!!<br> Water beads on waxed cars due to ______ tension caused by hydrogen bonds.
slega [8]
Cohesive. This means that the water is attracted to other particles of itself, so they stick and bead up.
5 0
3 years ago
How does the brain control the endocrine system?
Makovka662 [10]
As the head organ in the body which controls, monitors, supervises and influences the different organ system in the body and of the individual -characteristics, personality, traits, cognition, perception, intelligence, sensation and motor responses. The brain controls the endocrine system by its part, located somwhere in the medial temporal lobe called the hypothalamus, the master gland of the body. The hypothalamus influences every gland secretion and hormonal function that preceeds and proceeds in the body of an organism -growth, drives, sex, survival and etc.

The hypothalamus sends sgnals from the different gland organs in the body that either exhibits or inhibits the activity of that particular gland releasing hormone.
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