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kolbaska11 [484]
1 year ago
13

Need answer for both questions pls help

Biology
1 answer:
In-s [12.5K]1 year ago
7 0
First answer is A
Second answer is C
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The sides of the DNA ladder are made of two molecules that alternate. The alternating molecules are __?__ and __?__.
Rudik [331]

Answer:

Sugar and phosphate

Explanation:

sugar and p h o s p h a t e

3 0
2 years ago
The population change equation is Population Change = (Natality - Mortality) + (Immigration - Emigration). Which equation would
Snezhnost [94]

Answer:

B. natality + immigration = mortality + emigration

Explanation:

Migration refers to the movement of a group of people from one geographical region (location) to another geographical destination in search of better living conditions, work or social amenities.

Migration selectivity can be defined as the likelihood or tendency that a subset (part) of a group of people are going to move (migrate) out of a particular geographical location or area.

Some of the factors that influence migration selectivity are income level, age, education, gender etc.

Population change equation states that the change in the size of a population over a specific period of time is equal to the sum of the number of births and the number of immigrants that joined.

Mathematically, the population change equation is given by the formula;

Population Change = (Natality - Mortality) + (Immigration - Emigration)

Therefore, the equation which would create a stable population is given by the formula;

Natality + immigration = mortality + emigration.

8 0
2 years ago
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Salt is notoriously dangerous to land snails; however, some populations of aquatic, freshwater snail have brackish (or a mix of
Mashutka [201]

Answer:

The brackish water adaptation is clearly necessary because the aquatic snails need to live in an environment in which the river system has a higher quantity of salt than what land snails can take. I can determine that the environmental factors influenced the inherited adaptations because the second population has a higher salt concentration in their habitat compared to the initial population.

8 0
3 years ago
When a person loses consciousness due to a head injury from a car crash, the ____________________ keeps the body functioning by
Evgesh-ka [11]
<span>The question is asking us to fill in the gaps in the following sentence: When a person loses consciousness due to a head injury from a car crash, the (gap) keeps the body functioning by regulating the flow of information between the brain and the rest of the body. The best answer is that the gap should be filled by "autonomous nervous system" - this system is the one that is not controlled consciously, but one that is working in the background to make sure our body functions work properly.</span>
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2 years ago
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Why we need to monitor and effectively manage earth's resources
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3 years ago
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