Environmentalists are monitoring an area of tropical forest. They made the following graph to predict the effect of deforestation on this area over the next 20 years.What would a graph of oxygen production look like for this forested area?

A. A line that is leveling out

B. A line that is decreasing

C. A line that is slowly rising

D. A line that is increasing
Environmentalists are monitoring an area of tropical forest. They made - 1

Answers

Answer 1
Answer:

The correct answer is option B

By seeing the graph we can easily say that we see a graph that is decreasing. We can predict that in the next 20 years the number of trees will be be reduced in number.

Due to decrease in the number of trees, the oxygen concentration will also decrease. The production of oxygen will decrease for sure as trees are main source of production of oxygen in the rainforest.

Answer 2
Answer: B. a line that is decreasing.
if tress are disappearing then oxygen levels would decrease as well since trees give us oxygen and we give them carbon dioxide.

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Actions that are reactions to a stimulus are called _____________________.

Name two types of cell that can go through the cell cycle an infinite amount of times

Answers

Answer:

red blood cells and nerve cells

Explanation:

The Hayflick Limit is a concept that helps to explain the mechanisms behind cellular aging. The concept states that a normal human cell can only replicate and divide forty to sixty times before it cannot divide anymore, and will break down by programmed cell death or apoptosis

this is for further explanation

Which pattern of inheritance is responsible for a wide range of phenotypes that result from individual organisms having many different gene pairs controlling a single traita. multiple alleles
b. polygenic traits
c. codominance
d. incomplete dominance

Answers

The right answer is A. multiple alleles.

The multiallelic genes contribute to the study of polymorphism and genetic variability of individuals as well as populations.

In multi-allelic genes, individuals are differentiated by several alleles that exist in several forms.

For example: in a certain region of the genome there may be a single nucleotide polymorphism (SNP), one can find either an adenine or a guanine (bi-allelic).


a. multiple alleles
pattern of inheritance is responsible for a wide range of phenotypes that result from individual organisms having many different gene pairscontrolling a single trait

NOT:
b. polygenic traits
c. codominance
d. incomplete dominance

How much weight should a teen gain during pregnancy?

Answers

Answer:

It depends on the weight of teen before getting pregnant.

25 to 35 pounds should be weight gain for average weight girl , for underweight girl it should be 28 to 40 pounds and 15 to 25 pounds for overweight girl.

Explanation:

Nutrition , exercise is must for healthy teen pregnancy. All essential vitamins , minerals iron , calcium , folic acid should be in the diet. Low intake of essential diet leads risk of low weight of  baby , also may be other health complications. Alcohol, smoking , drugs should avoid during pregnancy.

Which process allows a mammal to continue togrow in size?
(1) mitosis of sex cells
(2) mitosis of body cells
(3) meiosis of sex cells
(4) meiosis of body cells

Answers

Answer: The correct answer is-

(2) mitosis of body cells.

Mitosis is a type of cell division in which a parent cell produces two daughter cells having same number of chromosomes as that of their parent cell.

It occurs through a series of 5 stages that are- Prophase, metaphase, anaphase, telophase, and cytokinesis.

It is responsible for the growth of organisms and the repair of damaged tissues (in case of multicellular organisms) as new, identical cells (that are identical to each other) are produced from the parent cell.

Thus, option 2) is the right answer.

Answer:

2) mitosis of body cells

Explanation:

Which of the following flowers should never be refrigerated? A. Anthuriums
B. Anemones
C. Statices
D. Gladioli

Answers

A- Anthuriums because if you do the buds dont open and you have a flowerless plant.

in a plant algae, fungi, and most bacteria cells, there is a rigid layer that surrounds the cell membrane and gives protection, support, and shape to the cell. what is this layer called?

Answers

It is called the cell wall. It provides rigidity to the cell.