Define Seafloor Spreading.

Answer:

This is your answer

Answer: formation of new areas of oceanic crust, which occurs through magma at mid-ocean ridges

Explanation: so a new oceanic crust is formed by magma at mid-ocean ridges.  

A researcher exposes a bacterial culture to UV radiation and then subjects it to progressively higher temperatures. As the temperature increases, the bacteria have a progressively harder time surviving. Analysis of the dead bacteria reveals large amounts of misfolded, aggregated proteins compared to wild-type control bacteria exposed to the same temperature increase. Which of the following is a plausible explanation for the data?
A. The ribosomes are mutated and are non-functional.
B. The initiator tRNA (fMet) has been mutated and is non-functional.
C. Molecular chaperones have been mutated.
D. DNA polymerase is mutated and non-functional.

Define the following term:
1. Pinhole camera

2. Screen

Do you think humans would be
as dominant if the dinosaurs
were still present?

what is self-imcompatibilty???​

Why do large islands usually have more species than smaller islands?

Question:
The phenylketonuria occurs in 1 of 10,000 individuals in a population. It is
caused by an autosomal recessive allele. Calculate the frequency of heterozygotes
in the population.

When you graph velocity versus time (a velocity-time graph), what variable is
on the y-axis?
A. Velocity
B. Acceleration
c. Displacement
D. Time
Help pleaseee

how do the structures of a vacuole and a nucleus differ?
A. a vacuole is enclosed within a membrane ,and a nucleus is not enclosed within a membrane.
B. a vacuole is thick fluid , and nucleus is rigid set layers
C. a vacuole contain no water , and a nucleus a mostly water
D. a vacuole contain mostly water, and a nucleus contain mostly DNA

. Students decide to remove the litter from an abandoned park and plant trees. Which of the following observations provides the best evidence that the action of the students has had a positive effect on the health of the park ecosystem?
A. The number of human visitors decreases.
B.The level of yearly precipitation increases.
C.The number and diversity of animals increases.
D.The average daily high temperature decreases.

Which of the following correctly describes a cell that is haploid. There is more then one correct answer.


A cell with a single set of chromosomes

Includes zygotes

In humans contains 46 chromosomes

In humans contains 23 chromosomes

All cells except gametes

Includes gametes

A cell with two sets of chromosomes

How do we know that height in humans
is a polygenic trait and not a single-gene
trait?

A. There is no way to know for sure.

B. People have varying heights.

C. Height is too complex to be controlled by a single gene.

What is structure 1?

. Which of the following would you expect to have cells with a cell membrane? *
1 point
panda bears
pine trees
spiders
all of the above

How are taxonomic keys used?

Question 4
Which of the following is not considered hazardous waste?
A
dead batteries such as those used in flashlights and radios
B
rotting meat and other food waste
С
metals such as lead and mercury
D

Proteins on the surface of a human cell and on a bird influenza virus are represented in the diagram below. Describe a change in the bird influenza virus that would allow it to infect this human cell.

Matter is passed from the living part of an ecosystem to the non-living part when which of the following takes
place?

A. Plants absorb gases

B. Plants decompose

C. Animals eat plants

D. Animals drink water

CAN SOMEONE HELPP ME :(

the distance covered by a bus is measured by an instrument called​

In 1847, the German biologist Christian Bergmann noted that mammals and birds living at higher latitudes (farther from the equator) are on average larger and bulkier than related species found at lower latitudes. Suggest an evolutionary hypothesis to explain this observation.

what happen to LH and FSH during ovulatory phase???​

Give two examples of elevation

Question 7
5
Parents are exposed to hazardous chemicals. How might this affect their
future offspring?
The chemicals could make the parents sick before they have offspring,
The offspring could inherit damaged DNA from the parents.
The offspring could have red hair
•

Predict: How do you think a period of hot summers will affect the rabbit population?

GIVING BRAINLIEST ANSWER CORRECTLY FOR 40 POINTS
List 3 people from the history of biotechnology and write one sentence about each persons contribution​

Why is family history thought to be important and a good predictor of an individual’s disease risk factor?

Because family members most closely represent the unique genomic (DNA) and environmental interactions that individuals experience

Because doctors can determine your family’s risk from your ailments

It is important to know family history so that a doctor can issue the right antibiotic to prevent cancer

So that doctors can know how your 1 st line of defense reacts to antibiotics mi

What is the function of a cell's nucleus?
It controls all the functions of a cell.
It stores the food, water and wastes in a cell,
It holds the cell together
It helps the cell take in nutrients

Explain why a person with brain damage may be able to see perfectly well, but not recognize faces.​

Similarities between tridax plant and elephant grass

A drought decreases the water level in Lake Winnipeg. The carrying capacity of the lake decreases.
Limiting factor?

Explain