Two organisms can be considered to be of different species if they

-live in two different geographical areas
-cannot mate with each other and produce fertile offspring
-mutate at different rates
-have genes from the same gene pool

Answer:

the second one, is the most reasonable one.

definitely not the last one.

i need help, use some of the words in the word box! ill give a brainliest

The fossil record provides evidence of five mass extinctions. Scientists compare fossils found in rock layers to find evidence about how organisms were affected by extinction events. Which of the following images shows evidence of an extinction event?


How are the bones in the fin structure of the Tiktaalik evidence of a transition from fish to amphibian?

Scientists use evidence from their findings to support theories of life on earth. Which of these findings could NOT be used to provide supporting evidence that life on earth has changed over time? *

A. increasing complexity of fossils in younger rock layers
B. increasing diversity of fossils in rock layers following an extinction
C. transitional fossils
D. rock layers with no fossils

Organisms with more complex body plans are more likely to be found in younger rock layers. This prediction is based on observed patterns of the increasing complexity of physical structures in organisms over time.

True
False
It is impossible to tell from this information.


PLEASE HELP

Use this calorie calculator to determine the number of calories you burned for three activities you performed. Then find the number of calories burned for the same three activities and the same amount of time by two people who weigh more or less than you. Enter the information in the table for yourself and the two other people. Describe the activities and the time spent doing them at the top of the three columns. Then enter the calories each person burns for each activity.

Individual (weight)

A student is going to use the above water dropper in an experiment. What is the amount of liquid in the water dropper?



A: 1 mL
B: 1.5
C: 2 mL
D: 2.5 mL

why is it important for scientists to do library research before lab research

Where are molecules of water created?

please answer for me

What type of cells does a mushroom have?​

how would the ground be affected by the garbage placed on the surface of the old dump? substances from the garbage

A. drain through the soil but are blocked from the groundwater by a layer of rock
B. drain through the soil and are redirected away from the groundwater by the water table
C. drain through the soil and into the ground water
D. do not drain through the soil and do not affect the groundwater

The absolute age of a rock is the aproxímate number of years ago that the rock formed the absolute age of ingenious rock can best be determined by

please help me, will give brainlist

Why might it be important to learn about collisions?

How many different seismograph locations do we need to locate the epicenter of an earthquake?

A
1

B
2

C
3

Use the diagram below to answer the next 3 questions.




At which point on the roller coaster will the car have the greatest amount of kinetic energy? Explain why.

Sonia is riding with her mom in the car and notices an abandoned baseball field that has a lot of grass and wildflowers growing in it. What type of succession is she observing? Explain your answer.

I know it's in the wrong subject but I still need help ASAP save me



Louis Pasteur (December 27, 1822 – September 28, 1895) was a French chemist and microbiologist. Pasteur was familiar with Redi’s work and was fascinated by the idea that covering meat could protect it from growing maggots or other organisms that could cause disease. Pasteur devised the process of pasteurization, which is the process of heating liquids to kill bacteria and other germs that may be present. This process is still widely used today to make sure that many of the liquids we drink are safe, such as milk and juice. There are other pasteurized foods too, like syrups, vinegar, and cheese.


So how did Pasteur disprove spontaneous generation? Pasteur used a special flask to show that sterile broth will remain sterile unless exposed to the environment.


Pasteur used a special flask to demonstrate that heating a liquid kills bacteria. His experiments also showed that the broth would stay clear if the bacteria were trapped in the flask’s neck. If he broke the neck off the flask, the broth was soon full of bacteria.


Pasteur put clear meat broth into a flask with a curved neck. The shape of the flask allowed air to enter but kept out bacteria. He heated the flask to boiling and let it sit for several days.


When he returned, the broth was still clear because the bacteria were trapped in the neck of the flask. Then, he went one step further: he broke the neck off the flask, exposing the broth to air. A few days later, the broth was cloudy! Pasteur concluded that bacteria cannot suddenly arise from the broth. Bacteria can only be produced from living bacteria. Life comes from life!


The experiments by Redi and Pastuer helped to convince people that spontaneous generation was not based on fact, that life must exist first to reproduce and create more life.



Describe Pasteur’s results and how they helped disprove spontaneous generation.

All you need to know is in the pic below

A group of students is investigating whether air resistance depends on the size of an object. The students throw two paper pieces each with the same force. One piece of paper is flat and the other is scrunched into a ball. The distance traveled by each paper piece is shown.


Experimental Observations
Student 1 Student 2 Student 3 Student 4
Distance traveled by flat paper 0.2 m 1.2 m 1.5 m 0.8 m
Distance traveled by scrunched paper 1.5 m 2.4 m 3 m 2 m

What was the test variable (independent variable) in this experiment?
Distance traveled by flat paper
The shape of the paper
Distance traveled by scrunched paper
The number of students

PLEASE HELP: Which of the following specialized structures help a bird maintain a constant body temperature?


A. Hard beaks

B. Edoskelteons

C. Watertight eggs

D. Feathers

A school bus travels 12 kilometers in .75 hours. What is the speed of the school bus?

an image that shows light from a light bulb reflecting off aluminum foil all of the light is being reflected do you think that aluminum foil will get heat.

yes or no

explain ​

What two things would you need to measure in order to know someone’s walking speed?

Mendel conducted many experiments on pea plants. His
experiments included crosses betwean pea plants with
seeds of different colors, like the one shown.
Parents
First
generation
Х
Yellow
Green
Yellow
What did Mendel conclude from the results of the cross shown?
A. Yellow seed color is codominant with green seed color.
O B. Green seed color is dominant and yellow seed color is recessive.
Ο Ο Ο O
C. Yellow seed color is dominant and green seed color is recessive.
D. Seed color is determined by multiple genes.

HELLPP MEE PLS!!! (Includes brainliest)


Pretend you're writing an essay about Why is it difficult for people to preserve nature.

What would be your title that lets the reader know what your essay is about?

dont use g0ogle

What do we call the speed needed for a projectile (like a cannonball) to overcome the force of Earth's gravity?

i need helppp!
please.

When Jacob is running, his heart beats 23 times in 10 seconds. What is Jacob's heart rate in beats per minute (bpm) while running?

135 bpm
136 bpm
137 bpm
138 bpm

Suppose Gene A on the left chromosome is damaged and no longer function. What form of the trait would show? Why ?

Please answer quickly!!! I really need the help!!

help i need help plz ill give brainleist