Benchmark test Flashcards
what are greenhouse gases
carbon, mathane, and H2O. they trap and hold in heat
what is the goal of science
to investigate and undertstand the natural world, to explain events in the natural world, and to use those explanation to make useful predictions
quanatative data
exact number measurements of data
qualatative
desciptive data
what are the 8 characteristics of a living thing
made of cells, reproduce, based of a universal genentic code, grow and develop, obtain and use materials and energy, respond to environment, maintain a stable invernal environment, and change over time
what are the 8 characteristics of a living thing
made of cells, reproduce, based of a universal genentic code, grow and develop, obtain and use materials and energy, respond to environment
what is a centrifudge
an obejct that breaks cells open to get DNA
what is true about a compound
the chemical and physical properties are very different
what is a valence electron
outermost electron that is involved in chemical reactions
what is the difference between a pos and neg charge
a pos charge gives and a neg charge takes
what is an ionic bond
bonds formed hen one or more electros are transferred from one atom to another
true or false: ice is more dense than water
false…ice is less dense
what is a monosacharides
a carbohydrate
what are fats, proteins, and nucleic acids made of (different_
fats are made of fatty acids proteins are made of amino acids, and nuclic acids are made from DNA
what to enzymes do to chemical reactions
speed them babies up
what are the levels of organization
Biosphere, ecosystem, community, population, organism, group of cells, cells, molecule
in the food chain, what are algae
producers
what are chemosynthetic bacteria
bacteria that dont need sunlight to live
what is biomass
total amount of living tissuewithin a given trophic level
what eats both producers and consumers
omnivores
snake eats from that ate a snake what level is the snake
level three consumer
what is the differnece from energy and nutrients
energy moves through the ecosystem in one direction while nutrients gets recyles
what is a limiting nutrient ina fresh water pond
phosphuras
unequal of earths surfrace creates ____
WID, CURRENTS, HEAT, AND CLIMATES
what is a microclimate
a tiny forest ina desert
two biomes with leats rain
desert and tundra
what is necasary for a water ecosystem
salt, water, nutrients, and oxygen
what is not true about the ocean
lowtide marks extends to end of continent
if you live ina fast flowing environment you need:
suckers, claws, ect;
what is it called when there are a bunch of plants in one area or a number of individuals in one area
population density
what does range do
gives you a general idea of where
what is it called when you are reproducing at a constant rate
exponential growth…j curve
what is a logstic or stable growth
s curve
what is a limiting facotr that would affect a sea otter
predators, pollution, competition
what is deforestation
the un doing of thy forest
what is the number of differnet species in biosphere called
biodiversty
ozone depetian
chloroflorocarbons
SHA: two jobs of enzymes
enzymes are proteins that act as a biolgocial catalyst and speed up chemical reactions that take place in cellsby lowering the activation energy
to build pathways in body
what is density independent facotr
limiting factor that affects al populations in similar ways, no pop no issue
exmaples are wildfires, or any other natural diasters
how are hunters dif today
high tech weapons, its a sport
how is the earth like an island
earth is surrounded by sapce like islands are by water we have a set # of resources and self susstainable
in a picture of an ecosystem where are the most nutrients
the bottom of rthe rover
