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Bas_tet [7]
3 years ago
15

1. A researcher observing an ecosystem lists the factors shown below in the image based on it what is the researcher mostly desc

ribing?
A
abiotic factors in an ocean

B
abiotic factors in a prairie

C
biotic factors in a forest

D
biotic factors in a tundra

2. The image below shows runoff causing an increase in the algae populations. What effect does this most likely have on the affected lakes and streams?

A
an increase in water level

B
an increase in water clarity

C
a reduction in dissolved oxygen needed by fish and shellfish

D
a reduction in temperature variations near the water's surface

Biology
2 answers:
Lana71 [14]3 years ago
7 0

Answer: Abiotic factors in an ocean

Explanation: without mincing words, it is pertinent to note that the researcher is relating the interaction of the abiotic factors such as water, soil, wind with the biotic factors found in the water body. this is best in describing a typical ecosystem, which describes the interaction of biotic factors with  abiotic factors with their environment. one compliments another, hence; it makes a free-flow ecosystem.

loris [4]3 years ago
6 0

Yo sup??

the answer to the first part is option C ie

abiotic factors in a forest

and answer to the 2nd part is option C ie

reductio in dissolved oxygen needed by fish and shellfish

Hope this helps

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Interpret the Punnett square. A Punnett square with four rows and four columns. The first row is labeled big-A, big-B. The secon
Naddika [18.5K]

Answer:

The genotypes shown represent gametes. False

One of the possible offspring genotypes is AABB. True

The parent genotypes are ABAbaBab×ABAbaBab. True

The parent genotypes are ABAbaBab×ABAbaBab. True

This cross shows two alleles for two traits. True

The gametes are diploid and the offspring are diploid. False

The genotypes shown are correct for a dihybrid cross. True

Explanation:

║ AB ║ Ab ║ aB ║ ab

AB║ABAB ║ ABAb║ABaB║ABab

Ab║ AbAB║ AbAb ║AbaB║Abab

aB║aBAB ║ aBAb ║aBaB║aBab

ab║abAB ║ abAb ║abaB ║abab

Drawing the Punnett square we can deduce that the genotypes shown do not represent gametes because there are more than 2 pairs of chromosomes.

As shown in the second column second row of the Punnett square one of the possible genotypes is AABB, it is distributed different (ABAB) but it is the same possible genotype.

The parents' genotypes are the ones that are written in the first columns and first row, they coincide with the ones in the statement.

A dihybrid cross shows the cross between two genes that have different traits.

The gametes are always haploid and the offspring are diploid because the two gametes come together.

7 0
3 years ago
Debido a la baja cantidad de calorías que utilizamos o quemamos en un día de trabajo
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Answer: Se debe a que el cuerpo lleva a cabo funciones fisiológicas vitales que requieren energía.

Explanation:

Las calorías son unidades de energía aportadas por los alimentos que consumimos a diario. Puntualmente se define la cantidad de calor necesaria para aumentar en 1 grado centígrado a la temperatura de 1 gramo de agua desde 14,5 hasta 15,5. La principal fuente de calorías en los alimentos son los hidratos de carbono, luego le siguen las grasas y proteínas.

<u>Dicha energía hallada en los alimentos, es utilizada por el cuerpo para llevar a cabo distintas funciones fisiológicas vitales e importantes para que el organismo funciones correctamente</u>, como el bombeo de sangre del corazón, funcionamiento de los riñones o el actividad del cerebro, etc. Nos referimos a esto como el metabolismo basal, el cual es el valor mínimo de energía utilizada en reacciones químicas celulares para la supervivencia del organismo. Dicho metabolismo basal depende de diversos factores tales como la edad, peso, sexo, etc. Pero también, las calorías son necesarias para distintas actividades voluntarias como caminar o levantar algún objeto.

<u>Sin embargo, la forma de energía de las calorías de los alimentos es distinta a la forma de energía necesaria para llevar a cabo estas funciones fisiológicas tanto voluntarias como involuntarias.</u> Para ello, la energía de las calorías debe de convertirse a otra forma y esto ocurre comenzando primero con la digestión de los alimentos, donde luego sus nutrientes son absorbidos en el torrente sanguíneo para luego dirigirse a las células. En las mismas, ocurre un proceso llamado respiración celular, en donde se utilizan las calorías de los alimentos para sintetizar ATP (Adenosín Trifosfato), la cual es una molécula que almacena energía utilizable por parte de las células y que eventualmente impulsará y llevará a cabo todos los procesos fisiológicos y metabólicos.

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