Which of the following is a biotic factor?
sunlight
worms
water
climate

Answers

Answer 1

Answer: Worms are biotic factors because they are living.

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A cell is in a solution with the simple sugar glucose. The concentration of glucose outside the cell is 30%, and the concentration of glucose inside the cell is 20%. Do the following for this cell:
A)a hypotonic solution; into the cell
B)a isotonic solution; neither in nor out of the cell
C)a hypertonic solution; into the cell
D) a hypertonic solution; out of the cell

Answers

The answer is c, hypertonic solution, into the cell.

B)a isotonic solution; neither in nor out of the cell

List the 5 conditions that can disturb genetic equilibrium in a population.

Answers

(1) nonrandommating;
(2) small population size;
(3) immigration or emigration;
(4) Mutations;
(5) Natural Selection.

The type of epithelium that contains two or more layers of epithelial cells is

Answers

Answer:

The type of epithelium that contains two or more layers of epithelial cells is called stratified epithelium...

Explanation:

The type of epithelium that contains two or more layers of epithelial cells is called stratified epithelium.

Stratified epithelium is a type of tissue that consists of multiple layers of epithelial cells. These cells are stacked on top of each other, with the bottommost layer in direct contact with the underlying connective tissue. The cells in the basal layer are usually cuboidal or columnar in shape, while the cells in the outer layers can be squamous, cuboidal, or columnar, depending on the specific type of stratified epithelium.

How does radiometric dating help scientists pinpoint the age of a fossil? A. In radiometric dating, scientists mix the carbon in a fossil with carbon from similar fossils whose age they know. By comparing the carbon, they can tell the exact age of the fossil.
B. Radiometric dating allows scientists to find fossils in only the lowest and oldest layers of sediment.
C. In radiometric dating, scientists place samples of a fossil in certain liquids until the samples dissolve. The rate at which they dissolve indicates the age of the fossil.

Answers

Answer:

C. In radiometric dating, scientists place samples of a fossil in certain liquids until the samples dissolve. The rate at which they dissolve indicates the age of the fossil.

Explanation:

The radiometric dating is the technique that is used to date the rocks carbon contents and traces out their impurities.

When the fossils were formed and is compared with the abundance of the naturally occurring radioactive isotopes and is made of the chemical elements and fossils are kept in this solution to find their relative and absolute ages.

C. In radiometric dating, scientists place samples of a fossil in certain liquids until the samples dissolve. The rate at which they dissolve indicates the age of the fossil.

A scientist carries out an experiment on a hamster. He exposes the hamster to x-rays at regular intervals. This results in a germ line mutation in the hamster. What is the possible outcome on the progeny of the hamster?

Answers

There may have been phenotype and genotype changes.

Research involves quantitative and qualitative research. Qualitative is a type of research that involves observation and collection of data but include a control. Qualitative research involves, case studies, phenomenology, archival studies, naturalistic observation and the related. These are based on experiences, observations and subjective perceptions of the researcher and the subject being studied.

During the early stages of embryo development, dolphins have gill pouches. What does this mean? Dolphins evolved from fish. Fish evolved from dolphins. Dolphin embryos go through a fish phase during development. Dolphins and fish share a distant, common ancestor.

Answers

The right answer for the question that is being asked and shown above is that: "Dolphins and fish share a distant, common ancestor." During the early stages of embryo development, dolphins have gill pouches. This mean that dolphins and fish share a distant, common ancestor.

Answer:

Dolphins and fish share a distant, common ancestor.

Explanation:

I looked it up

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Veins contain a network of valves to insure a one-way flow of blood but arteries do not. This is because veins must counteract the force of _______ on blood flow