A group of students burned three different kinds of food and
collected data.
Food
sample
Mass
Starting
temp.
Ending
temp.
1
100 g
20°C
24°C
2
50 g
20°C
30°C
3
110 g
20°C
27°C
6a. How many calories were contained in each piece of food? Remember:
cal = m XAT

Answer:

sample

Mass

Starting

temp.

Check each of the following statements that are true with regard to Griffith’s experiments.a. ______ Griffith discovered transformation in bacteria.b. ______ Mice injected with smooth bacteria quickly became sick and died.c. ______ Encapsulated bacteria can become "naked" bacteria.d. ______ Bacteria that do not have capsules tend to be harmless.e. ______ Smooth bacteria develop a capsule only after exposure to the DNA of encapsulated (rough) bacteria.f. ______ Griffith’s transforming factor was the protein in the capsule.g. ______ Transformation allows bacteria to acquire new genes.h. ______ Enzymes that destroyed DNA would prevent transformation.

1. the north polar constellation can be seen in the southern hemisphere.

true or false

2. the south polar constellation can be seen in the northern hemisphere.

true or false​

5. Which of the following catastrophic events usually affects only coastal regions?
A. floods
B. hurricanes

Chemicals and hazardous substances controlled by the Toxic Substances Control Act (TSCA) include all of the following except _____.


polychlorinated biphenyls

bisphenate

radon

asbestos

Space exploration can lead to money going to U.S.
businesses and universities.
What are two things NASA might hire U.S. businesses and universities to do?
A. Teach people to read
B. Improve athletic teams
C. Build complex equipment
D. Research new ideas

CFCs are safe on Earth's surface but become very destructive to ozone when exposed to UV
light in the upper ----------? Upper what

(HELP IM CLUELESS) Biodiversity
542 500
450 400 350 360 250 200 150 160 60
Millions of years ago
Examine the graph that shows the changes in biodiversity over the past 500 million years. Analyze the graph at each of the yellow
triangles. Select the options below that correspond to the events occurring at the yellow triangles. Select ALL that apply.
A)
B)
C)
The change in biodiversity was most stable at the times indicated by the
yellow triangles.
There have been five mass extinction events, with the earliest occurring at
450 million years ago.
Species were evolving faster than the extinction rates, resulting in new
species forming quickly over time.
Humans were altering the environment too quickly with deforestation and
climate change, resulting in many lost species in a short period of time.
The environment was changing faster than the species were adapted at the
time points labeled by the yellow triangles, resulting in a loss of species.
D)
E)

True or False. Only animals have adaptations that better allow them to survive and reproduce, flowers do not.

What is the original biosphere, sometimes referred to as Blosphere 1?
O
a greenhouse on the Mir space station
the planet Earth
a sealed environment in Arizona
the human body

_____ is essential for all life within
an ecosystem.
A. Trophic
B. Water cycle
C. Predation

Choose the option that best matches the description given.

the study of the frequency, distribution, cause, and control of disorders in populations:

which vitamin helps in DNA Synthesis?​

I WILL GIVE BRAINLIEST AND EVERYTHING IF YOU HELP ME

In order to go through Mitosis, DNA is packaged into structures known as what.


a

Enzymes

b

Chromosomes

c

Double Helix strands

d

Nucleic Strands

The characteristic of light waves that makes objects appear bent when placed in water is called
A.Reflection
B.interference
C.bending
D.refraction

Parasites only affect species that are prone or unclean.


True

False

1.La energía es la capacidad de un cuerpo para producir trabajo.

2.La energía se clasifica solamente en renovables.

3.Las ondas se pueden propagar en un medio o un espacio vacío.

4. Las ondas se pueden clasificar en longitudinales y transversales.

5. La energía cinética es aquella que se encuentra en movimiento.

6. El núcleo de la Tierra está formado
por metales, principalmente hierro y níquel, y en menor
cantidad por azufre y oxígeno.

7. La corteza terrestre está compuesta por rocas
8. La contaminación se puede
definir como la presencia o acumulación de sustancias en el medio ambiente
que afectan negativamente el entorno.

9. Los elementos de la tabla periódica se clasifican de acuerdo con sus propiedades y características
similares.

II. Escoge

1. Son fuentes de energías renovables:

2. Son fuentes de energías no renovables:

3. Partes de las ondas:
15. La ciencia que estudia los seres vivos es:

16. En la biotecnología se incluyen las áreas de:

17. Consiste en la liberación de sustancias químicas a la atmósfera que alteran su composición.

18. Se debe a la presencia de desechos en el agua. La contaminación de mares, ríos y lagos se produce por
las actividades del ser humano.

19. Se debe a la acción humana (los residuos y la basura arrojada en cualquier superficie terrestre).

20. Cuando el contaminante es una sustancia química que procede normalmente de los usos industriales.

21. Surge con la emisión de fluidos a elevadascontaminación.

22. La actividad humana produce mucho ruido, y los altos decibelios en un determinado lugar por encima de sus niveles naturales marcan la contaminacion.​

what makes a good scientific argument?

If you do not know the answer than do not answer. You don’t have to answer all of the questions just answer the ones you know. Will give brainliest if you help.

The simplest nervous systems are called....

Question 5
How do increases in the carrying capacity of Earth for people affect the carrying capacity of Earth for other species?
Select one:

It increases for most species.

It decreases for all species.

It decreases for most species.

It increases for all species.

long time no see?? apple sauce

what seven elements have the appearance and properties of a metal but behave like the non-metal in certain situations?

which best describes the concept of natural selection?

A. an organism will always mutate to survive
B. The fittest organisms are selected for
C. Nature selects the organisms with the most Mutations
D. mutations make organisms more fit

help i’ll give you brainilest

What is the hallmark of a chemical change?

what is the relation between chromatin ,dna,gene,chromosome?pls answer in simple words ​

6
Which two particles would be attracted to each other?
Oo oo
electrons and neutrons
electrons and protons
protons and neutrons
all particles are attracted to each other​

Oil pollution in the ocean is mostly caused by

How a terrestrial reptile will regulate body temperature if it is placed in a habitat that is extremely dry with the temperature of 55C

In DNA, a sequence of three bases is a code for the placement
of a certain amino acid in a protein chain. The table shows some
amino acids with their abbreviations and DNA codes.
Which amino acid chain would be produced by the DNA base
sequence below?
C-A-A-G - T- T - A-A-A-T - T-A