Why do we not have many fossil records from the precambrian era?

What is restoration growth?

Adaptations are A. unfavorable traits in a particular environment. B. favorable traits in a particular environment. C. traits that are acquired as an organism lives its daily life. D. traits that cause an organism harm.

Which term applies to the biological aspect of a woodchuck living in underground burrows, eating plant food, and feeding often in open areas? A. productivity B. niche C. ecosystem D. energy flow

Which of the following is an example of a disturbance to a community? A. Waves hitting a beach B. Plowing a field C. A mudslideD. All of the above E. B and C only

How does the structure of the vascular bundles in stems and roots and of the veins in leaves make the process of pressure-flow possible?

Describe how human activities threaten polar bears in the arctic

What did Mendel cross pollination of pea plants prove

Which type of rock is created when lava cools and hardens? A. igneous B. sedimentary C. metamorphic D. cement

Name 2 ways the diffusion of popular customs can adversely affect the environment

Once your ambulance is dispatched to an emergency, you have an obligation to respond. what is this called?