1. which would make the best pioneer species during primary succession?

1points
a
bacteria and lichens

b
grasses and birch trees

c
lichens and grasses

d
bacteria, lichens, and grass

2. true or false: a population pyramid with a wide base has a population that is decreasing.

1points
a
true

b
false

3. which of the following are nonrenewable resources?

select all that apply.

1points
a
fossil fuels

b
sunlight

c
nuclear power

d
wind and sunlight

4. which of the following are renewable resources?

1points
a
fossil fuels

b
metals and other minerals

c
plastic

d
wind and sunlight

5. in the logistic growth model, as a population approaches the carrying capacity, what happens to its growth rate?

1points
a
becomes exponential

b
doubles

c
increases

d
slows to zero

slitherio is the original. its the best friend of all middle schoolers. the man you can count any time you have some free time. slitherio is the guy you hang with while you're in the computer lab suppose to be doing "research or whatever". slitherio isn't just a game but a friend.

wormaxio is just a fake trying to squeeze its way into the friend group. trying to pretend its cool and your best pal but how long has it really been there for you, really. it only wants you as friend to boost its social status. wormaxio is just annoying fake pleb. no offense

you and have a wonderful day

humans are now responsible for causing changes in the environment that hurt animals and plant species. we take up more space on earth for our homes and cities. we pollute habitats. human activity often changes or destroys the habitats that plants and animals need to survive.

the cost of mining is extremely low compared to the money earned from mining, creating income to improve the environment.

blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. as the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.